First, I feel bad for you. I wish you the best. What would I do? 1.- Evaluate the quality of the product you have so far. I am sure there are people here that

First, I feel bad for you. I wish you the best. What would I do? 1.- Evaluate the quality of the product you have so far. I am sure there are people here that can help you with that. 2.- Try to get back the 35% from her. I think is the least she can do. 3.- Find a good technical co-founder. If you have a good idea and a good product somebody may be interested. Offer them a plan where they can get equity with time. e.g. 20% after 6 months, 45% after one year of work. To find the co-founder you need the help from somebody you trust that can help you evaluate how good is your co-founder. You have already shown that you are committed to your idea. Good Luck!