Preceptor Gossiping about me behind my back

I am doing my final placement in a small hospital. Up until last week I've had very consistent stable patients in the ED (ie. constipation, sprain, headache) and I haven't been exposed to a lot of severe trauma patients. So last week was a little bit rough and I was feeling very flustered because my nurse never showed me certain things or where items were and she always leaves me alone so she can sit and talk/play on her phone in the nurses station, on top of that I had a personal dilemma that I was transparent about with her (which I regret sharing). Regardless, I completed my tasks, all my patients were safe and the only thing damaged was my confidence because when I asked for help locating an item, she said "you should know where it is, you can't use your personal problems to not do your job"

Well, I go into placement the following day and as I open the breakroom door, she is there talking about me and then completely went silent, some nurses are now treating me differently in comparison to my first few weeks and I know it's due to her talking about me. This was also confirmed by multiple other nurses who I have worked alongside during my time there.

How would you handle your preceptor gossiping about you behind your back during consolidation? I have done my best to not speak to anyone about this and only asked if I had done something wrong. I do my job professionally, which is noticed and praised by the staff and patients that I have worked with.