Looking for some insight on where i stand, and if a divorce is even possible?

my wife of 10+ yrs says that she wants a divorce. her reasons are that I don't eat lunch with her anymore, I will not sit next to her at the pool, and I do not take out the trash without complaining of saying that she is nagging me. we are still living together but she is angry with me because I will not just walk away since she says that it is over. the house is in both our names but her parents live in an in-law apartment in the house. Although she is the one that has been drinking and partying for the past 4-5 years while I have stayed at home with the kids, she is the one who is asking for the divorce, for me to move out and custody of our daughter. So my question is, does she even have grounds for a divorce, if so am I the one who needs to move, and will I be able to get custody of our daughter because I am the one that has been involved with everything she has done over the past 4-5 years.