acting on aids

I am a teacher in a school, a kindergarten aid acts as if she hates me, what should I do?
She glares at all time and acts like she is the school police. I think she is trying to bate me in reaction to it. Should I ignore it or should it, the principal and I have an interview and why she behaves so negative?
You are a teacher, she is a help to the humble – have * as fired.