call child welfare anonymously on them.

if the child needs help & it is obvious she does then as an adult it you owe it to her to get her some. if her parents won't then someone needs to reach out & help the child.

look..the situation living there is going to come to a head & explode anyway. it doesn't sound as though it is a fairly tolerable situation to begin with..

what is more important to you? keeping everyone happy & making nice & ranting here..or seeing that a troubled child gets the help she needs?

your t called it right. it is neglect. it is a child. they matter more than your housing. or if the mother will hate you.

period. priorities.