SDs DID have a party after all.
in the evening, a few hours before the party started, i took some things and went with my baby to a friend's house. it was an inconvenience for her but i simply wasn't willing to sit through all that sh*t without the possibility to leave. at a certain point during the night, my friend and i went to the house. it was loud,crazy, it was simply terrible to look at and realize the people there are 13 - 20 years old. their behaviour was terrifying.
i called the police and talked to them about the party.nothing happened.

i didn't sleep much that night. in the morning i went home,the house was a mess. SDs fixed it later during the day.

i think someone was in the baby's room but i can't prove it and nothing was broken, but...

i'm trying to save money,but it's going too slow and it's too hard.