Forget condone etc.
You come and take me.
You come and talk to my parents, convince them.
And also put a list of conditions for you to accept or else... etc
These are common things which wives resort to.
Further they may threaten to file false cases if you do not accept their conditions are all common.
You out of fear of police wont go to her house, she out of ego wont call you and initiate talks.
Irrespective of what you have written in your letters, your wife has not joined you. So the matter is still the same... i.e. she has deserted you, such letters what you have written can be used in court to show that you have tried to bring her back.
Though you have applied for divorce, Even now, its not late, all proceedings are just on paper.., try to talk to her alone, meet her at a different place. IF she insists that you go to her parents house, then first go to jurisdiction police station, inform concerned office CI that you are going to visit your wife, they will call up your wife and inform the same about your visit. Your approach should be this way. And then talk it out. Convince wife. Your wife has just given one complaint which is non-cognizable in nature, so matters can be still resolved, unlike other women who have filed an array of cases like 498a, DV, etc.
Forget about facebook chats etc, facebook itself is nonsense. You can however use such data via printout, by approaching nearest cyber crime branch, get a certified copy of it, and can use it in court in the future, if talks fail.