from woman's perspective ED is not a reason for breaking otherwise fully satisfying relationship.If I enjoy someone's company ,his nature,his brain,his availability as a human,ability ti listen,ED will not stop me,as long as I feel we are connected.Talk to each other,share your concerns and be honest,there is no wright or wrong in loving relationship,if you are accepting each other for who you are. There is always a way to "dance " around the predicament without loosing self esteem or hurting,and with time as you get closer and explore multitude of possibilities while compromising, you both will grow into more secure relationship,where ED will not have place
give yourself a chance,thing will be Ok,it may be just a temporary frustration on her part.
good luck