Dear Carlos..
I know what you mean..
I am also currently going through that phase where I told my ex to give me space to work on myself.because I realized that I cannot keep pushing him away all the time.i believe your ex feels the same way too..she’s just scared and you are doing the right thing by giving her space..all you can really do is be patient..from the way you’ve described her I am sure she feels the same way for you…she cares…so you need to realize that this isn’t even about you..its all about her,her fears,her insecurities..
as long as she doesn’t truly believe that she is worthy of your love she will keep pushing you away…
so the space is needed for her to work on that…

I wish you two all the best..