What has someone done to you to make you never trust them again?

had someone move in with our family, a highschool friend of my sister, she had an abusive family and came to live with my family while I was in college in a different state. she got put on our mobile plan worked a job at gamestop lets say she's "Sarah".

She starts by erasing my childhood wall drawings I made as a kid/teen and moving into my old room. She starts eating nothing but junkfood and by the time I come back home she totals my sisters' car, I have to share driving her with my sister to her job until she convinces our neighbor to loan her money to get a new car herself.

Later we get roaches because of her disgusting habits of never cleaning. She took hour long baths locking people out and would disappear for a week or two at a time. she stopped paying rent and ran up our mobile bill by playing a ton of online phone games and whatever else she could to run up data.

then she started stealing my sister's games sell to her job to pay for her bills she owed us. she gaslit my mother into thinking my sister was actually the bad one, she tried to steal my sister's ps4 to sell as well. My family wanted the money she owed us back so badly they overlooked her stealing from us to pay us which is nonsense, my family wasn't too bright or just didn't care about my sister's property. then she stole again to sell her games, eventually we got the games back, but not before hearing the excuse "I only took them because I knew you'd say no." eventually she is pushed out and I discover she's been prostituting her self and living off of random guys as well as our family, then I find out she's trying to convince my sister to also sell her body. but by this time she's finally moved into some boyfriend's place in another state.

The real thing is that I lost any trust I had in my parents because they put up with this rancid human being despite her disgusting behavior, because she owed them like $1,600 over time. The sad thing is we didn't even need it we were decently well to do. we were in no great need, but the fact that she owed us was more important than bettering our lives by ridding our selves of her. that money obsessed that the extended family was always asking why we didn't have her kicked out already. I lost any trust I had in Sarah a long time ago. The real disappointment was the doormat my parents became.

/r/AskReddit Thread