I think it's perfectly find to ask your wife to leave the room if you feel she is being somewhat disrespectful while talking on the phone around you and your kids. But if it really don't bother you just ignore it.
I would of picked up the bag and looked in it. I could of been some lotion. She really might be trying to get a reaction out of you. Would you have asked before BD what was in the bag? IMO becoming confident is getting back to who your were with better tools to deal with problems that arise in our lives. If you would of asked before, I don't see a problem with asking now. You could have said, "what's in the bag?". If she says something like, "none of your business", you shrug your shoulders and walk off. If she says, "why?", you say just curious. If she tells you, then great, you say, "nice." And then walk off. All three of those scenarios, you were calm cool and weren't pushy.
M:37 W:37 T:11 M:10 S17, S13, S10, S4 BD:06/28/17 OM confirmed 07/20/17 Recon the M 10/29/17 Working hard:2gether
Onward and forward
This process is not a sprint it's a marathon! Patience, Patience, Patience.