"I just don't understand why she is like this?...She used to be very sexual person!"

Have you asked her "what changed?" And if so, did you listen to and accept what she said?

I ask you this because I am the ld partner in my relationship and I have tried to explain to my h what happened to me, but his usual response was to argue with my explanation or to tell me that I shouldn't feel that way. I don't know for sure but I feel that if he could accept my explanation as true then we could work together on making change.

I hope that she recognizes that you do care and are making an effort to reconnect.