Legal Question in Real Estate Law in Pennsylvania

And your problem is?

The first part of your question suggests the answer. You indicate that you "gave" your mother money. A gift is a gift - the recipient can do what she wants with it. Were there some kind oif strings attached to this gift?

Why does your mother have to add you to the deed just because you gave her money?

Unless there are additional facts, then I don't see that you have much to complain of. However, if there are facts other than what you relate, you should contact a local attorney to see if there are legal conditions which would entitle you to an interest in the home.