My 8 year old hid from me for 20 minutes when it was time to leave a birthday party.

It was a family party and I was there with my two girls, 8 and 15 months. My husband wasn’t able to come so I was on my own. After being there for over 2 hours we did all the party stuff (presents, cake, etc) and families were slowly starting to leave and my 15 month old was getting fussy. She was showing signs of being tired and hungry plus she was over-stimulated with all the people around.My 8 year old was having a blast. This is a fun house with lots of kids her age, including girls who she usually doesn’t get to play with. It’s also important to note that she didn’t eat anything while at the party (she’s a very picky eater) so I know she was hungry which I’m sure affected her behavior.I gave her a 10 minute warning. After a generous 10 minutes I went upstairs to get her and she was nowhere to be found. None of the other kids claimed to know where she was (not sure yet if they were in on it or not). After looking in the room they were playing I called her name and asked her to come out if she was hiding. Fast forward 20 minutes later most people in the house are helping me search for her, I’m calling her name in every room on all floors and starting to panic.The mother of the house helps me look and finds her hiding in a closet in the first room I checked. At this point I am feeling exhausted, panicked, embarrassed and pissed off. I spoke to her on the spot about how that was scary and why that was dangerous. Even after this she refused to take off her dress up clothes and cooperate. I had to guide her down the stairs as she was scream-crying and basically drag her out of the house with my 15 m/o on my hip.I am the type of person to always tell mothers that the behavior of their kids doesn’t reflect their parenting, and I would never judge parenting based on a kid having a tantrum. But I 100% feel like I have done something wrong and I have no idea where to go from here. I have spoken with her about this and how scary it was, she says she understands.I still feel like I need some more tricks or tools or something because I have no idea what I would have done in this situation if the mother hadn’t found her, I don’t think she ever would have come out. Just needed to vent about this, thanks for reading! via /r/Parenting http://bit.ly/2G4qvBg