Immigration Site

I am US CITIZEN and
I have filed the paper work for my mother’s Green Card, which is under process. I have a minor sister, aged 18. When I was completing the paperwork for my mother I was advised not to fill-up my sister name in a column where it asked “Write the name of minor who will accompany”. So I did not mention my sister name in the form as per the advise.

In this situation please advise what options I have that my sister, being minor, can come along once my mother received her Green Card?

Is that my mother can only file for my sister once my mother becomes herself as US citizen? Or can she do after she gets her Gredd Card...How long this process will take?


Or is there a way that once my mother receives her Green Card she can bring her minor daughter on a dependent VISA. Is that this way the process will be little fast?

please do reply quick

Options are whichever the fastest one of below.
1. you apply for your sister under F4
2. Your parents apply for you sister under F2B while they are LPRs.
3. Your parents apply for your sister under F1 when they become US citizen.(if she was single)
4. your parents apply for your sister under F3 when they become US citizen. (if she got married)

I guess #2 is the fastest in general, but depends on where she is from.

What is F2B AND LPRs
How about dependent visa does that work