Legal Question in Family Law in California

First question is whether it is on her custodial time, which I assume it is. The next question is whether you have the standard clause in your custody order or agreement that you get first right to provide care when she will be away. If not, the next question is whether the aunt is unqualified to care for the child. If not, you have nothing you can do. If she is unqualified, you can go in ex parte for an order that the child be in your care.

A deeper problem involves your ex's lack of communication over these important parenting issues. I predict future problems like the one you just mentioned if no steps are taken to tighten up the parenting order. A return to court may be the best next step.