Ravi ji,
I can imagine your concerns. It must be a frustrating period of guess work.
The party who makes up the mind first for divorce generally gets the natural advantage in the process as that party starts early moves from offensive strategies and gathering of relevant details and evidence.........other party is in limbo and dilemma and liable to commit mistakes b'cos the other party can't anticipate...........
If other party (you) makes moves to approach the lawyer, it's like underwriting that the dispute is gone out of hands...................
Best thing is to go to the private marriage councellor/and also to a lawyer, but never make any formal moves.
Never react to spouse's (your wife) allegations and show patience and silence and approach it with positive and reconciliatory mood which should be able to gather sympathy and in a negotiating way and not in an aggresive manner and don't fall pray to "instigating" tactics to enflame the matter any more.
If matter gets blown out of proportions, it becomes easy for the spouse to make faul cry and climb the doorsteps of court caliming "enough is enough"
If wife is apparently contemplating then.......get your finances tightened ...gather her resources of income...................don't allow to create any more incident which would go in her favour
It's a delicate act of not being submissive as well as not aggresive also.