I always had a good relationship with my sister,I am 47 and she is 45. Recently I noticed that she keeps a distance and she is very cold towards me. She has 2 young kids and I have 2 teenagers. But I always helped her as much as I could. I stayed at her house for 5 days and helped taking care of her 3 year-old son so they could go on a trip. I stayed with her son again while she was at hospital with her 2nd baby. For 5-6 months, I went to her house every Saturday morning and helped her with the kids because her husband had to work. I babysat her 2 year-old every Tuesday for 10-11 months. I did all of this with so much love and I did it because I wanted to,she never asked for any of these. I enjoyed every second that I spent with her family.last week, she told me that she's been angry with me for months beause I have changed a lot and I alwys play innocent. She said that I always have a mask on and I'm not my true self. All of these are a huge shock to me and I can't digest it. I asked her to meet for a talk so we can resolve it. She is very aggressive and angry also dealing with a lot with her kids. I think her issues go back to our childhood. We have been through a lot as a family. I don't know what to say or how to say it that doesn't make her more upset. I'm scared to loose our relationship. Any help?