I am sorry to hear of your pain. I am glad you are able to look at things and see where you needed to make some changes. I know you want to hear from me that I think she will come back, but I am not sure because I feel it would have happened already when she has seen your changes. I would go to her once again...maybe in an email and let her know you love her, care for her, and will do what it takes to build things with her again. If she maintains that she wants to move on then sadly it will be time that you try to heal and move forward.
Since you are not together she does not need to tell you whether she is involved with someone else. I know how hard that has to be for you. She may see your changes and like how they sound but she may just not be ready to come back...maybe at some point, but I don't hear that now. It is confusing because she says these nice things and I know she feels them, but it may not mean she wants to be back together. Keep working on yourself and hopefully she will miss all of you and want to be back.
Keep being strong and maybe as she feels safe with your changes she will desire to return.
Let me know if I can support you further...if all good for now, please take a moment to click on the rating tab to rate my support. I wish you well and hope it all turns out well for you.