I'm getting some mixed messages from your description. If they've only been here a couple of years, how is it that the kids are 9 and 13 have been here their whole lives? If Mom and Dad speak Spanish at home, how is it that the kiddos don't speak their parent's language? Plus, there are some unanswered questions: How are the parents supporting themselves and their kiddos? Are they working, paying taxes, bringing home paychecks, or are they dependent on charity?
As a former teacher who had a lot of illegals in my classes, I wouldn't want to have deported kids who have learned the language, who have been here most of their lives, who want to stay in the US and continue their schooling. I've had some students, however, who had no interest in learning English, didn't want to be in school, and would rather have returned to their native land. I wouldn't want to be the one to deport the parents either, if they're working and paying their own way.
But, if the kiddos would rather have gone back home, if the parents weren't contributing to their new country, then I'd have deported them in a heartbeat if the law would have allowed it.
Unfortunately (or maybe fortunately for some of them) I didn't have that authority anyway.