Is my ex wife over me?

She had an affair and divorced me. We were married for 15 years, together for 22 yrs. I was not the perfect husband lord knows but i or our two awesome children did not deserve to be cheated on. I have totally given her want she wanted, me out of her life. We have been divorced for a year and a half. I do not wish her happy b-day which she texts me the day after asking me whats up with not saying anything. I do not wish her happy mothers day, which I heard about the next day. Not being mean,just gracefully stepping aside and letting her go. About a month ago she had to drop something off at my house. I was not there. She text me - " bat bags are on your porch, please know I hate you for real" Then last week I was out golfing with a buddy and she texts me - " just wanted to let you know I got to missing you today. Can me and the kids stop by tonight and show you something they bought"? She has tried to pick fights via text about cars in my drive and other things. I politely reply back to answer her questions but i do not take the bait for a fight and I thank this angers her more. She is the one that cheated, supposedly found her soul mate, the love of her life. Whats the deal. Why can't she just let me be? I have no idea if her and married lover boy are still together, can't say that I don't care but I just don't ask. Don't do drive Yb's or stalk her on facebook. I am just living my life and trying to move on the best I can and help raise my kids as a father should.