回複：To All experts: Several questions about EAD?

(1) Do I need to include $70 Fingerprint fee if she already did the Code3 for I-485 before?
No.

(2)Where to file I-765,CSC or TSC?
It should be TSC since it is where your I-485 is holded.

(3)What is her status, H1B or AOS if she doesn't use the EAD after receiving it?
H1B if she doesn't use EAD even she has that.
AOS if she use that.

(4)Can she change her status to H4 inside USA if my I-140 gets rejected?
She has to leave US to reapply for her H4. She can't do that inside US. She can go to Canada to have that fixed.

Good luck.