Not sure if I am unreasonable.
I have just found out my sister bought a house and knew nothing of it.
2 months ago I purchased my first house which needed work and I have builders presently there working. I received a phone call from my builder informing me that he has a meeting with my sister from some work she has for him. Since the meeting was taking place I my house where builders are I decided to go there. I was surprised to hear my sister talking about work she needs doing at her new house. I had no idea she bought a second house. I feel like if my builder did not call me I would have never known. I had no idea she took my builder's number last time she came to visit the work been done. Is it okay to feel annoyed about her behaviour? Should I confront her?