re: Complicated situation. Advice appreciated. Will try to be brief.

This is a troll...No other way to see it.

This guy is single, has multiple properties, claims hetero, claims a hot young blonde is in some way attracted to him, claims she is without father, mom, bf, home, deceased child (girl to make it more sympathetic) etc...they have met several times, her in skin tight revealing outfits....and it just goes on and on.

OP, serious questions....

First off, what is YOUR age?
Are you gay? (if "no", are you sure?)
Where does she actually live? (largest sign of the troll is I saw no info on where this person who lost her home and child actually lives)
She has some sort of income (stripper, whore, drugs, Taco Bell) What is it?
Where is your female cousin that she was friends with?
Where is the woman in your life? Ask this mythical creature what you should do.

IF, and it is a long shot IF, you are telling the truth, no doubt that the girl needs help and doesn't know how to ask you...but

there is something wrong with you as well! There is A LOT you haven't told us..I have no doubt you did something like frick her and now you don't know how to detach her without getting sliced open by her bf, who is probably someone you told you would watch out for her...

I still think its a troll, if not....you are probably gay. And she is hiding bodies of Toms on your property.