@No-one-knows-me idk if my reply is gonna help or make u feel better, but tbh if they r still with ur brother -in-law or as i would like to address him as some-dirty-ass-cheap-thirsty-toe-fungus just try to avoid that mf as much as you can. I dont think your fam is gonna believe you until u give them any proof of something..but if he's in the same room as you then pls be alert, also carry a paper spray and always call someone and ask them to stay on line and record ur call.
ALSO I BELIEVE YOU.
cuz i'm someone who got harrased by a member of my digusting family too
ik it feels really disgusting and that you dont want to live anymore, but as time passes things will get better. i hope you feel ok