Most Helpful Girl
Sorry, but you need to move on. It doesn't matter if you and her family think you're great for her - if she doesn't feel the connection and want you of her own accord then it's not going to happen. From your post it seems like it's been tried and failed several times and if you keep trying to force this you're just going to waste your life away on someone who doesn't want you.
If her family like you then I'm sure you're a decent guy. You should want someone who is going to love and appreciate you for the person you are - not because you tricked or forced them into being with you