Are there "squatters' rights" with regard to legal residency status? If not, she is still illegal, regardless of how long she has lived in the U.S. If she was allowed to stay by one President's Executive Order rather than by law, she has been on tenuous ground and is subject to the whim of a different President.

The good thing is that her children can stay in the U.S., or can return to the U.S. as adults as U.S. citizens.