Hi so I have a co worker who was my mentor when I first started the job and me and her grew close. She’s 30 years older than me so I looked at her as a mum figure, I got a new role and moved teams. I told her something confidential as it was something I thought I could share with her. Today I found out she told our boss and which made things uncomfortable for me today. I’m hurt that I thought of this person as more than a colleague and she has done this. Should I confront her about it or just leave it and keep my distance?