she has all the right to file a section 9 case, however, it is imperative that she files a written statemen/reply to your divorce petition too. both divorce and RCR section 9 are like sister cases which have a bearing on the other case, so, you file an application in court asking for the opposite party to file her reply, failing which, you can proceed without her reply and ask for the court to give a 'no say' order and proceed further in your case.
things to keep in mind:
do you really want to keep her or divorce her (make up your mind)
have you received a copy of your RCR case and the summons?
if yes, have you filed a reply to her RCR petition,? if no, file the reply along with a certified copy of your divorce case running in another court.
ideally, both the cases can be clubbed together and go hand in hand in one single court
you can ask for dismissal of her RCR case as you have already filed for Divorce prior to her RCR case
has she filed for 24 hma (maintaience)
you have to make preparations for HMA 24 section 125
she wont file DV as she has filed RCR