I'm a TA in a secondary and I am not getting on well with my other TA colleague. I have been nothing but polite to her, but she is always snappy and trying to always tell me what to do, despite her being at the school as long as I have. This morning she stuck her nose in on a bullying incident which was reported to me by two students. She told me "you will only get their side of the story with those two", and I replied "I'm still logging this on CPOMS". She replied in a really snappy voice "well I'm just saying!". Later on in the staff room I was logging the disclosure on CPOMS. The bell went and I was literally about to click "send". All the other TA's were leaving the staff room and she called over to me "Don't let [line managers name] catch you in here!". There have been other similar incidents, but none of the other TA's are trying to act like my boss, only the SENCO. I don't understand why she's doing this but I feel uncomfortable around her now. I was considering reporting her but I'm not sure if I should wait until something more serious happens.