Tad what your wife said should be translated as.....Gee...Leave Me Alone!!!
She knows she shouldn't treat u this way but her head want let her be nice. Right now she wants you to just go away! She sounds like she has a lot of stuff to get done and you just sending a simple text WILL peeve her off. I tried this with my xh. I used every little chance I could to get to hear his voice. He knew it too!
Stay clear of her. You can be her friend down the road a piece.