Nandha,
Too much worry at this point of time, openly express what is the requirement? Divorce or wiling to reconcile??Let her file all DV , 498a which definitely will be in your plate, the moment they realise that you aim for divorce.
So no point in worrying about it, rather stratergise to tackle them, be preapred through counsel to address 498a and DVand later file divorce on cruelty ground once cases were filed against you. Or else gather evidence for her wilfull desertion, you get what she is trying , at later stage you cannot file divorce claiming desertion as ground. Thats why her drama of rejoining if you sense it is not a genuine request. Hope you tried for MCD??