When Grandparents Interfere with Co-Parenting...

When Grandparents Interfere with Co-Parenting

Let’s slow down and look at what’s actually happening here, because “grandparents interfering” is rarely just about grandparents. In my sixteen years of sitting with co-parenting families, I can tell you that extended family interference almost always lands hardest when the co-parenting relationship itself is already fragile. The grandparents become the spark, but the dry timber was already there.

So let me ask you this first: whose parents are we talking about?

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Because that changes everything. If it’s your ex’s parents who are undermining your parenting decisions, that’s a conversation your ex needs to have with them, not you. That’s their family system, their work to do. And if your ex isn’t doing that work, then the real issue is that your co-parenting relationship doesn’t yet have strong enough boundaries around it to protect your children.

Second question: what does the interference actually look like?

There’s a big difference between grandparents who spoil the kids with ice cream and grandparents who are actively contradicting your rules, speaking negatively about you to the children, or being used as weapons in the conflict between you and your co-parent. One is annoying. The other is genuinely harmful to your kids.

Here’s what I know to be true clinically: the co-parenting relationship, even after separation, needs its own protected space. You two are still a team. You may not be romantic partners anymore, but you’re permanently linked through those children. When outside parties start inserting themselves into your parenting decisions, the first question is always: did we let them in, or did they push their way in?

Sometimes divorcing couples use extended family as emotional support, which is healthy. But sometimes that tips into triangulation, where the grandparent starts carrying messages, taking sides, or parenting the parents. That’s where it gets dangerous for the kids.

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Ask Figlet about grandparents interfere co parenting.

Think of it like this: imagine your family as a house. After divorce, you’ve got two separate homes now, but they’re connected by a bridge where the kids travel back and forth. When grandparents start camping out on that bridge, giving directions about how each house should be run, the bridge gets crowded and unstable. The kids feel it.

If possible, sit down with your co-parent and treat this as a shared problem rather than a blame conversation. The goal isn’t “your mom is out of control.” The goal is “we need to agree on what role extended family plays in our kids’ lives, and we need to present that as a united front.”

If your co-parent won’t have that conversation, then the work shifts to what you can control: your own household, your own consistency, and protecting your children from feeling caught in the middle.

Because here’s the thing that matters most: your kids are watching how the adults in their world handle conflict and boundaries. They’re learning whether family can be trusted to put their wellbeing first, or whether they need to manage everyone else’s emotions to feel safe.

About Figs O’Sullivan, LMFT
Figs is a licensed marriage and family therapist with 16+ years of experience working with couples. He’s the co-founder of Empathi, host of the “Come Here to Me” podcast, and author of an upcoming book on relationships and the systems that shape how we love.

Read more: Co-Parenting After Divorce: What to Expect from Counseling

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Figs O'Sullivan is a Licensed Marriage and Family Therapist (LMFT) and the founder of Empathi. For 17 years he has helped couples move out of disconnection and back into secure, loving connection, drawing on Emotionally Focused Therapy and attachment science. With his wife Teale, he runs a San Francisco couples therapy practice, is a relationship expert to the Stars and Silicon Valley, and built Figlet, an AI relationship coach trained on their clinical work. His approach has guided more than 41,000 relationship assessments.

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Frequently Asked Questions

How do I deal with my ex's parents undermining my parenting decisions?+
Here's the hard truth: you can't fix this directly. If it's your ex's parents causing problems, that's your ex's family system to manage, not yours. The real issue isn't the grandparents (that's what I call the Versus Illusion, thinking they're the enemy). The real problem is that your ex isn't protecting your co-parenting boundaries. You can't have a healthy conversation with people who don't respect your role as a parent. Your ex needs to step up and have that difficult conversation with their own family. If they won't, then you're looking at a deeper co-parenting issue that needs addressing.
Why do grandparents always seem to take sides during divorce?+
Grandparents are scared. They're watching their family structure collapse and they're terrified of losing access to their grandchildren. So they often align with their own adult child out of loyalty and fear, not malice. What looks like 'taking sides' is usually their nervous system in full protection mode. They're reacting to the threat of family dissolution the same way we all do when we feel like we're losing something precious. The key is recognizing that their interference usually gets worse when the co-parenting relationship is already fragile. They sense the instability and try to 'help' in ways that often make things worse.
Should I cut off contact between my kids and interfering grandparents?+
Slow down. Before you go nuclear, ask yourself: is this really about the grandparents, or is this about your ex not backing you up? Cutting off grandparents is like amputating a limb from your children's support system. Kids need as many loving adults as possible, especially during divorce. The goal isn't to eliminate the grandparents, it's to establish clear boundaries about parenting decisions. Work on strengthening your co-parenting communication first. If you're struggling with these conversations, Figlet, our AI relationship coach, can help you practice these difficult boundary-setting conversations before you have them in real life.