would you be mad?

my elder sister said she was dropping her man off to a after party & that she will be back asap, she leaves her son (my nephew) 5yrs old home with us then stays out getting drunk..her sons balling his eyes out for his mum and refuses to sleep until she comes home & asks me to call her for him & when she picks up he asks her to come home right now & she said why are they being evil to you? ..he said no just come home & she said ill be there in 10mins then comes home at 4am ..8hrs later …i felt so bad having to cuddle him to sleep & wipe his tears ..telling him she will be here soon & don’t worry, he was so upset he opened the curtain and waited by the window for her to come back & every car that drove past got his hopes up if it wasn’t her car he said it would trick him.