If you can use people finder to find her address, or that of her parents, this would be a great time to send a neutral "happy holidays" card with your contact info. I think it is great that you are willing to make yourself open to her friendship even if she cut off ties by joining that cult. Even if it doesn't pan out (sometimes things have changed so much that the initial connection just isn't there anymore), you are still doing her a great favor by letting her know she is cared about and not completely alone. I wonder if she is in touch with her family?

"Saying you have too many children is like saying there are too many flowers." Michelle Duggar, a lady who has enough flowers.