Need help ASAP.

Going to drop my son off in about a half hour. Saw she withdrew $500 from our account. I don't want to ask where the money is going, but I need to let her know that is an amount that we need to talk about before withdrawing. How should I phrase this?


Me 23, Her 21
1S 2
M <1yr, T 7
WAW: She moved out 11/15/2014
She started D process 1/29/15