I-797 Approved petiton unmarried daughter 21 or older of LPR

[yous]

Hello,

I have recently received an I-797 stating that my petition has been approved (Priority date: December 16, 2014 notice date: April 29, 2015) Section: unmarried son or daughter 21 or older of LPR, 203 (a) (2) (B) INA. it also says that my original visa petition has been sent to NVC. Do you please know the wait time or any helpful information regarding the greencard processing?
I am a Moroccan citizen studying in the U.S with an F-1 visa.

Thank you

[BombayParents]

Unmarried daughter

On a student visa F1, how can you hope to sponsor unmarried daughter for a Green Card ?

Something seems to be amiss.

[inadmissible]

yous, see the visa bulletin http://travel.state.gov/contenthttps...june-2015.html category F2B

bombay, I am assuming she is the beneficiary, not the applicant of the alien relative petition.