Estelle might not do mean things, but she's pretty slick and knows it. I don't like anyone feeling isolated, but I think she does a lot to make herself unlikeable. No one's saying she has to kiss everyone's ass, but I see her as the type of person who just annoys me for the dumb shit that she does. She's not mean or vindictive, but terribly annoying and sly.
She's the teacher's pet, she's the kiss ass employee, she's the close-talking person who wants to give you a hug because you have the sniffles, and she's the type of person to volunteers other people's possession because she claims she would easily give up her things, etc etc.
It's funny because people who don't realize what she does would think she's sweet, but to the person who sees her sly ways, they just wish for her to slip on ice and miss work for a few months.