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Sibling Rivalry in Tweens: How to Handle Conflict Without Taking Sides

Sibling Drama Isn’t A Problem - It’s Practice When your kids are fighting - one minute playing, the next snapping or shutting down - it’s easy to wonder: *What am I doing wrong? Should I step in… or stay out of it?* In this episode, Dr. Sheryl sits down with therapist and mom of seven Bridget KerMorris to unpack what’s really happening between siblings - especially when one child is entering the tween years and everything starts to shift. Together, they explore: - Why your older child may suddenly seem mean, distant, or unpredictable - What younger siblings are actually experiencing (and often not saying) - The difference between a *pattern* and a *moment* - How to respond without taking sides or shutting things down - What “repair” looks like, and why it matters more than getting it right You’ll also hear simple, real-life language you can use in the moment -especially when your child says things like *“It’s not fair”* or *“You love them more.”* Sibling conflict isn’t a sign that something is wrong - it’s where your kids are learning how relationships actually work. Thank you to our partners for making this episode possible: - Equip: https://equip.health/goodinside: Learn about Equip's at-home eating disorder treatment at equip.health/goodinside https://equip.health/goodinside

Dr. BeckyhostBridget KerMorrisguest
May 6, 202635mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

Navigating tween sibling conflict with validation, boundaries, and repair skills

  1. Tween sibling conflict often reflects normal developmental differentiation as middle schoolers test likability, manage big internal emotions, and pull away from family toward peers.
  2. Parents can reduce escalation by using self-compassion, depersonalizing kids’ behavior, and focusing on patterns and safety rather than single heated moments.
  3. Effective interventions balance validation of feelings (fairness, favoritism fears, anger) with firm boundaries about behavior, especially around cruelty or emotional/physical safety.
  4. Younger siblings benefit from age-appropriate explanations of puberty and social changes so they don’t interpret withdrawal or moodiness as personal rejection.
  5. Long-term sibling closeness is built through repeated cycles of conflict and repair, with parents modeling that hard topics are welcome and repair is possible.

IDEAS WORTH REMEMBERING

5 ideas

Tween volatility is often development, not character.

At 12, kids are sorting identity, social belonging, and intense emotions they can’t yet name; this can show up as alternating sweetness, distancing, and meanness toward siblings.

Start with self-compassion to stay effective.

When parents feel blamed or panicked by sibling conflict, they’re more likely to overreact or referee; a grounding mantra like “I’m a good parent in a hard stage” supports calmer leadership.

Treat sibling dynamics as skills training, not a verdict on your parenting.

Siblings provide a built-in arena for practicing conflict, boundaries, and repair; fighting doesn’t automatically signal a broken relationship—often it’s the pathway to learning closeness.

Validate the child’s experience without conceding the claim.

When a child says “You love them more,” reflect what’s true emotionally (“I can see why it feels unfair”) and add context (“we argued earlier”), without reinforcing favoritism as fact.

Repair means communicating importance, not just “I love you.”

A powerful repair is: “What you think and feel about our relationship matters to me—even when it’s hard to hear,” which teaches kids that hard truths are safe to bring to parents.

WORDS WORTH SAVING

5 quotes

Siblings are often a child's first experience of relationship, first experience of closeness, of conflict, of power, of repair, which is why it can feel so unsettling when that relationship suddenly gets rocky, especially in the tween years when an older child starts pulling away and a younger child is left trying to make sense of it.

— Dr. Becky

Kids are kind of walking around being like, "Am I likable?" Like, "Do people even like me, um, if I'm kind of prickly or hard?"

— Bridget KerMorris

Self-compassion is a non-negotiable when you're a middle school parent.

— Bridget KerMorris

I think of sibling relationships as a lifelong group project. No matter what, forever you're connected in some way.

— Bridget KerMorris

When siblings aren't getting along, that's actually a good sign. That's a good sign that they're gonna be able to grow in their relationship, because it's actually, there are siblings who grow up with pretty much no conflict, this is not common, right? But no conflict, and then they're not close.

— Bridget KerMorris

Tween developmental shifts and peer orientationSibling relationships as a “lifelong group project”Self-compassion for parents under stressValidation vs. agreement (fairness/favoritism)Safety thresholds: physical and emotionalCoaching skills: space-taking, wording, speaking upRepair as the engine of long-term closeness

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