她想按原计划2011年1月27日回国照顾外婆。请问如果1月27日拿不到卡，但已面试
过，可以她先回国，再回头我们把绿卡邮寄回去吗？
-Yes. She needs to get the AP (回美证) to travel to China, otherwise her I-485 may be denied.
I thought AP is needed for her entrance to US next time. Does she need to show AP when she LEAVES US as well? If not, can she just leave and I will mail the AP to her in China once it's approved?
Most likely her GC would be approved by her next visit, and I can mail her the GC, so that next time when she enters US she can just use GC, not AP, correct?
再就是如果她等不及面试一定要按原计划回国，我们收到面试通知时可以要求重改
日期到半年后她下次来时再去么？
-May be not.
What's the general guideline for rescheduling appointment? Can it be rescheduled at all?
Thank you!
