i could just spit nails

Vent time

So i come to find out that mil has been giving Fifi formula mixed in to her bm. I know that this isn't harmful for her but... i specifically said both when I brought emergency back up formula initially to her house and when my bm supply temporarily tanked to only use formula if there isn't enough bm. To top it off, when I noticed the can of powdered formula on the counter we are temporarily living here due to our house being flooded from the hurricane I asked DH to ask if they have been giving it to her. He didn't mention anything so I assumed my mistake that it was now a nonissue. Well this morning, I see the canister on the counter and open it up to find more scoops out of it. When I ask DH he said, oh yeah they add it to her formula. Seriously???? And you didn't think of mentioning to them at that moment to please DON'T do that???? So I reminded him of the reasons I don't want her to have formula unless it is an emergency which he agrees with and he gets all stressed out about having to tell his mother, so now I have to tell her when he very easily could have breached the topic when it was actually happening. Aaarrrrrrrgh!!! If he can't do this, how is it going to be when fil wants to feed her meat we are vegetarians and want to raise her that way until she can choose for her self to eat meat or not. I am usually one of the most laid back people but the stress of not being in my own home, living with the inlaws, working a full time and a part time job and trying to get the finances back in order when having zero dollars for Christmas I've reached the breaking point. Thanks for letting me vent.