It sounds as if you need to surpass mummy and daddy, and forget all the things you want to do to make your parents be the way you feel they should be and should have been...
That should cut that repeating pattern of connecting with prospective mates that always need repair...

Plus you need to establish deep trance, and imagine an invisible cord between you and your parents and siblings, and cut those cords... Maybe Alex knows something about that...

There is a lot more to do in your case, these solutions are just to address the immediate voiced concern... You must include all of your problems and concerns, and include the whole Being in the healing equasion for it to become a permanent fix... Look into a mirror, and step back from yourself, without moving, and say to yourself from all inside, "I am building a perfect Human Being" with the attributes of a Princess...
(prince for males)...