I would suggest you talk with a therapist if this state of mind continues.
Clearly she is "moving one," which problem means not seeing you and also seeing someone else.
That is difficult to accept.
There is some grieving for some time which should gradually get better.
If not, then a therapist in person can help.
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If she wants to come back to you, she would tell you.
You should not expect to make her do anything.
Do you really think that you should "win her back?" if she is telling you these things?