You were very lucky in your stray . . . coat's a little rough and perhaps the ears could be a little larger, but she's got a beautiful body shape, lovely feet, and a very nice profile.
Some friends of mine once had a Siamese male take up with them. They advertised and eventually somebody showed up to claim him from a town over 60 miles away. He hissed and hid under the sofa and scratched the (*&^*^$*%^$ out of his putative owners when they tried to retrieve him . . . so they left him where he was. Apparently he REALLY did not like life as a show cat, and he put 60 miles between himself and them all on his own.
Also, my friends had had him "fixed" . . . . :-o