I recently became a US citizen in August. My mom is visiting me in US and had come over from India in Jan. Her I-94 was expiring in July, and we decided to file an extension I-539 for her in June'2017 to stay till end of Oct 2017. We received the acknowledgement but have not received a reply from USCIS yet.

I want to file Green Card for my mom but i am not sure if i can file it now when we are waiting for the reply to her I-539.

Can anyone please advise if I can apply for her GC or wait until a response for her extension is received.

Thanks in Advance,