Well, increase of score in only one module wont help. She has applied for reval already for both the modules. Hope for the best. Thanks for the inputs.I think there is a good chance to get 9 on her speaking or writing, but less chance to get 9 in both speaking and writing.
I also asked for reevaluation on both writing and speaking but only my speaking score has increaed.
So if she has money to spend i would say go ahead!