Ladyj, there is really nothing she can do in the US to gain residency. The best she can do is to stay out of trouble.

They would have to get married in order for her to be able to gain residency. Your son would then file a petition for her plus a waiver for her illegal presence. Nineteen is a young age to get married, but my husband and I got married at 19 and we're very happy. We're still pursuing college, but we're doing it together.

Anyway, thanks for your support for the DREAM Act and supporting your son's gf. I'm sure it means the world to her to have you and your son by her side.