Annoyed

please tell me I'm not overreacting, I put my daughters bottle of 3oz of just bm to warm up . And my daughter started crying needing to be changed and I ask my SO to keep an eye on her bottle and take out when ready he said ok. But i guess he forgot cuz I finished changing her and he's in his office I go in the kitchen her bottles still warming up and now it's 1oz. I'm mad cuz I worked so hard to give her that bottle. Should I just trash it it's scorching hot. I shouldn't let it cool down? I went ahead and made another bottle cuz she was fussy and hungry after being changed.