My question- what I do when she constantly texts I hurt her and that now she has nothing to live for and no family- since she pushed her other family away.-- Thanks for any help- plus I can take any criticism. I have learned feedback is good and sometimes it may sting
I'm glad that you've been able to make the break from the marriage, having decided it wasn't right for you. You deserve your own life and your own happiness.
Are you clear on how much contact would be the right level for you now, and what form that would take? I'd suggest that you consider whether it's a good idea to keep contact open at all. If you want to remain in contact, I recommend that you decide how much, communicate it and - most importantly - stick to it. For example, to talk once a month on the phone, or once a week, or whatever it is. I'd suggest keeping it quite limited, to reinforce the fact that she needs to find support elsewhere.
If you're saying to her that she needs to be less dependent on you (and she does need to, from what you say), I think you have to back it up with your actions. You can't be available for her to contact you whenever she wants to. I think it would be a good idea to ask her not to text you at all, and tell her you won't read any texts. And then don't. Texts are too immediate as a method of contact. It sounds like you need more distance and structure in your contact arrangements.
It must be very difficult to have her say you hurt her, and now she has no-one. It's not fair on you, and I'd suggest telling her that. If she's in therapy, then this is for her to work through with her therapist. If she's not in therapy at the moment then it sounds like therapy would be a good idea (funded by herself, not you). Otherwise, I would make sure that she has the telephone numbers of a couple of crisis lines to ring if she's feeling overwhelmed, and I think that's where your responsibility ends with regard to this.
This might all sound harsh, but your ex-wife needs to work on recovery and to build her own life now. I think the history of your relationship together means that you supporting her isn't straightforward. It's not like support from a friend. It's likely to keep her stuck, she will be reminded of her loss, and she might even have unrealistic hopes, I think you'll be helping her most by setting strict limits on the amount of contact you have and the amount of support you give. You need to think about the effect on your new relationship too.