After all... nothing else matters.

Hello, I have made some publications about my relationship problems. To summarize, I will say that for 5 years I had a relationship with a woman, with whom, the communication problems were constant. Her family is not very communicative and very restrictive. She has broken up with me on several occasions, but she usually looks for me after some time, and I allow her to return.
Now, things seem to be a little different, in December 2018, doctors diagnosed their mother with cancer, to this day she is still struggling, it has not been easy for my partner, since her family, as I mentioned before, does not seem to offer her nothing of support. My partner is depressed, angry, her head is full of worries and ... well, I think he reached her limit, at least with me. A few days ago, she decided that it was best to let us go, because supposedly, we had lost the way, and she was feeling overwhelmed with her mother situation.
I did not agree, I never agreed with this separation, I always offered my unconditional support, all the time, but she rejected me, pushed me away. She never realized that she had me at her side to endure anything, she never let me support her. I feel devastated because I feel that she got bored with me, that maybe he is looking for consolation with someone else, why? if I was always there? It is unfair! I am very confused, because she says that despite feeling disconnected from me, she loves me, but she never specified if she wanted me as a couple, she just told me that she loved me and she wanted me to still being friends ( i can't do that)
. I do not understand anything and I feel guilty for denying my friendship, I feel that I am the bad one in history when leaving her alone with her sick mother. I feel that I have gone beyond everything, I tried everything, absolutely everything to make her feel better, to make her feel loved, supported, but she simply told me that she no longer felt that connection ... she was never clear to tell me things in front. I do not know which way to go now, I feel very sad.

Now, she seems to be much calmer, I see some of her publications in F B, I suspect that she is attracted to someone else, why could not she trust me? Why do not she love me if I gave her my whole heart?

I was with her in the most difficult times, and I would do it again, but it does not matter, she does not care.