You are so right when you say that even though you are at risk for another placenta previa it does not have to happen again. Doing all you can now to arrive at and maintain optimum health of body, mind and uterus is probably the only control you will have over the situation. That and positive visualization/prayer/meditation.
One question, and I am sure it was covered in your care, was there uterine or amniotic fluid infection? That could have been a contributing cause to the PPROM.
Also, is the endometriosis still a factor?
I am glad you and Eleonora survived and are healthy today. What a scary time.
Just so you know and I am sure other midwives will chime in here too; I have served a mama who had a history very, very similar to yours including a classic, midline CS, but she had 2 previous fetal demise, at 25 weeks and 30 weeks, and she did go on to have a beautiful, term homebirth. It can happen Sarah. I don't think you'll be given a chance at it within the western medicine world, though. For now eat well, ask the soul of your next child to choose a trouble free pregnancy and birth for you both, trust your body and be grateful for the experience and wisdom it has given you.
One more thing, biolfavanoids can help grow a strong bag of waters. Make sure your diet is rich in this. Here in Hawaii I tell mamas to eat lilikoi (passion fruit) to grow a strong sack.