Similar to daddy issues or mommy issues, instead of craving a motherly/fatherly relationship, you crave a sisterly relationship. You crave somebody who can teach you to do your hair, or gossip with, or make fun of, someone to guide/be guided by. You crave somebody to understand you in a way you never had. Such as relating to your emotions about your parents, or even just understanding your annoyance about something. More simply put: Craving emotional foundation the way siblings have, more specifically a sister.
Person 1: Y'know, I have brother issues.
Person 2: Really? Cause I have sister issues.
Person 1: I have a great therapist for you! They helped me out a lot.
Person 2: Really? Gee, thanks!
The best Nun in the world. She likes to sing holy moly in bed. She is gay. She likes to say penis a lot. She likes to keep her armpits white and have herself tan. SHE HATES PALE PEOPLE.
Sadie: Hey sister ava
Sister Ava: Shut up you're pale
Sadie: You got me there.
Sister Ava: PENIS