How do you deal with people who you need to give validation to otherwise they'll treat you like shit?

[FýrdracaDócincel]

My girlfriend's little sister is like this. She grew up in some kind of hard-ass household, prides herself on not caring about other people's feelings and openly admits she requires a lot of validation. If you don't give it to her, she won't treat you with even the slightest bit of common decency.

When interacting with her, your options are to be extra nice to her and actually be treated like a human being in return, or treat her just like everyone else and be treated like shit by her.

Worst still, she has been taught how to fight by her abusive father, is used to physical pain and is very aggressive so standing up to her is legitimately dangerous.

Interacting with her feels like I'm negotiating with a terrorist and I'm thinking about just avoiding her altogether.

But that can't be my only strategy when dealing with these people.

[devilish-cutie]

she souds like really problematic person and avoding her really is the best