Hello everyone! As we all know USCIS has been backed logged and seems and feel like taking forever for most of petitions to move or get approved. My mom has filed for my dad to come here. PD is 10/2019. I realized that California Service Center is one of the slowest and that is where my mom’s petition went to. My mom is a GC holder. Anyway, the question is.. That petition for my dad, my sister is also a derivative. She is now 19 y/o and it is making us nervous about how she is getting close to turning to 21 y/o and afraid and have the question of “what if” she don’t get to come here before she turns 21. Also, I have told her to not go to school yet for college back home because she probably will move here before she finishes. Told her that last year but they still not here yet and telling her the same thing hoping they get to come in the next year. Please advice!