回複：急問：小白兔，皮匠等前輩有關B2延期的問題。Thanks!

1) She may file EOS, any time before I-94 expiration (forget about 60 days), with a new PP;
2) or File EOS with old PP.

http://blog.wenxuecity.com/blogview.php?date=200710&postID=9200#PPexpiring