I just want to know if it is OK for her to use EAD for work while maintaining a valid H4.
She would lose H4 status the day she starts working on EAD. Her status then would be AOS pending. And if you use EAD, both of you would lose your respective H status - just fyi - but would still be on valid status that of AOS pending.
My lawyer does not think that way. According to him its valid for spouse(and not primary applicant) to have valid H4 and use EAD.
I would like to know about this too...I'm planning to go back to Australia for vacation in Feb and if I get a job before Feb, is that mean I lose the H4 and cant go back in Feb unless I have AP with me? (to date, theres no update when I enter the receipt number at the USCIS website).