AITAH for the way I minded my nephew

My sister's (30) best friend passed and she went travelled for the funeral. Her son (9) doesn't like flying etc so I offered to mind him so she could go. I fully expected her to say no. I'm 22M and can barely look after myself. She had a few issues:

Complaint no.1: I took him into a bar I work at sometimes. This was before opening hours. I didn't drink or anything. They were having trouble with the POS (the till) system. I had him beside me all the time. I served him an apple juice shot (it was just apple juice). She felt it wasn't appropriate to take her kid to a bar. I'd agree if the place was open but it was me, the owner and a worker there.

Complaint no.2: he was interested in my tattoos (i only have about 6 of them) and I put those fake tattoo stickers on his arm. She felt he was too young for those stickers. They are designed for kids. I got them in the toy shop.

Complaint 3: his bed time is 8.30. He didnt have school for reasons. I probably allowed him an extra hour. It was hard to get him to go to bed any earlier and it was only for five days.

Complaint 4: she apparently practices independent play with her son. Apparently he plays by himself, at home to improve imagination and some other stuff. I didnt know but that just sounds mean. Suffice to say I played cards, ⚽, video games etc with him. Apparently it affects the routine.

I let her spout all the complaints because it was probably a tough time for her and I also don't know if she's right and I'm wrong. I genuinely think for a first time minding any kid, I did an okay job.

What annoyed her more was when they were leaving the boy came over and hugged me (I don't do hugs). He turns to his mom and says when are you going on holidays again mom. It took every part of me not to burst out laughing 🤣🤣

AITAH

Edit: she must be on reddit lol. She text apologising. Saying he had a great time and that she was talking to a friend and she said all boys need an adult twat in their life and she's happy he had some twat time. Said if I wouldn't mind having him for a few hours now and again for some twat time. She said he loved building the wardrobe with me (what a little snitch🤣). Said he was chatting all the time about his stay etc. I'm not sure if twat time is a recognised parenting theory.