I’m confused

I currently own 5 rats, and each one has a very unique personality, however I don’t understand how to give affection to my rat Banshee. I’ve had Banshee for about 3 months now. She’s been put with the other three rats (her and her sister together), had some biting problems, but overall is a sweet rat. I do get confused on what to do with her though. I understand that not every rat is a cuddle bug, but how do I give her attention? She likes to come to the door of her cage and stare at me, but if I put a finger anywhere near her she grabs it and shoves it away from her. If I move too fast she might bite, but i’ve learned better. She stands and watches me pet all her sisters but I literally cannot be near her or she shoves me away. What do I do about this? Or is this just the way she is and she prefers company and not affection. Someone help me understand please😭