Does it become my business when she decides to leave me completely in charge of our son without telling me about it?

I mean, I can do it(there's no way in hell she'd be able to look after our son for a whole week by herself), but don't I need to know if she's leaving somewhere?

Me-35 Com law-28
S-3
T-6 yrs w/14 mnth bu
1st bu- 2/2012
Rec-4/2013
2nd bu-10/2013
IC-2 yrs(anger issues)
MC- 5 mnths-fail
OM~1/1/14 OM dumped 6/4/14
New OM ~10/4/14