Is it normal that someone changes like this?
Hello
My story is long and a little bit awkward.....I have a friend....she is 15 years older than me...we have been friends for 7 years,,,,,well we are not only friends......she is my sister, coworker and we even complete our studies at university together,,,,we had always been a part of each others life.....she used to introduce me as her daughter,,,,,we enjoyed spending time together,,,,,,I help her a lot......with everything,,,,,we became closer friends when her husband passed away and left her with two kids....one of them is at university now....i have always been with her....helping her out and he helped me too and i learned a lot from her......her father passed away a year ago and since then she changed a lot......she said that she felt his loss as a wake up call that tells her to wake up and become strong.....as a sign that one day she will be alone and she needs to be strong....she started minimizing our phone calls and we did not meet unless we have work....however, our year was so hard and we had a lot of work and studying and projects that we mostly did together and if we weren't together, we used to do it over the phone....until June 2, 2018.....everything changed....we had a fight at work.....a silly one....she shouted at me at work and left me then we had a holiday for four days and she did not even bother calling.....we met at work again and she acted as if nothing happened .....i tried to control my feelings but i acted in a way that i have never done before......after two days....i asked her if she is welling to talk to me.....she said....today no, i do not have time.....i have people that are waiting to see me.....i felt so annoyed,,,,,it did not even feel that she missed me! She called on the same day........and we fought again....then i did not talk to her again.....we completed our work only without any kind of talks.....she did everything alone....bough new electrical devices alone although we went together and chose them and she did not even tell me that she went and bought them....she started hiding things and she doesn't want me to know anything about her and when I asked what is wrong? she said nothing I just don't feel talking to anyone......and at the end i was the only one that she is not talking to....she is talking to everyone, seeing everyone but not me and when I ask: why aren't you talking to me....she always have the same answer: do not compare yourself to other people..........you know you are different....you are my friend that i know is always there!!!! she is contacting everyone,,,,,,taking care of everybody and missing everyone but not me.......she said that i am bothering her with my questions and it seems we need to decrease the amount of bond we have.......but in my opinion, it is not decreasing,,,,it is disappearing,,,,,i started to hate her and i miss her....we are still doing things that are related to work together but in a different way....we do not go together in the same car or talk about what we did before or after.......we went from phone calls that last for hours for no phone calls at all...i am not calling her since i promised not to call her and bother her and if she want to talk to me she knows my number! but i miss her.......should i tell her or is she trying to tell me that it is over? is it a work relationship only now? what can i do...i am so confused and hurt.....i feel i had lost 7 years of my life taking care of someone that doesn't like me! What do you think? Am i humiliating myself by trying to talk to her?