Ummmm

idk just be a bîçh 2 her

Don't be mean to her! That's very hypocritical!

She came here for attention. Bore her to death with sense and reason. Get her to stop creeping because it's wrong or leave. If everyone collectively is dryly passive-aggressive to her, but also reasonable, she will probably get bored and leave or someone could get through and get her to stop bullying.