Time. All of her close friends were obligated to be in close contact with her consistently. She's in a romantic relationship with Clutch because she had to work for him for so long. She's got a sibling type friendship going on with Rough and Tumble because she was forced to work with them. Jez is her best friend because they had to stick together for a while due to circumstances regarding an RP.

Fundamentally, she tends not to be open to peoples advances. When she does interact, it's either business or pissing you off and nothing in between. She values shared experiences where she cansus out if you're trustworthy or not. She's not a cat, but she's similar to one. You can't just walk up to her and lovebomb like with a dog. Just exist in the same space without imposing any pressure or expectations on her for long enough and she may respect you enough to be cordial.

When you know her, shes more likely to banter with insults instead of just insulting you. She's very kind but in a silent way. Actions over words. She still won't totally let you in but she'll be roasting to defend you as well as roasting you. Lots of going out of her way to do kind things and lying about it. She might make cookies and say they taste gross and tell you to deal with them. That sort of thing. She still won't let you know about any of her "Kii" stuff. You have to really gain her trust with that.