Lil: interesting you should say that. She just called and asked me when it was that I was planning to go to Tucson.
She's probably scheduling something right now... surgery, major dental work for one of the kids, having the house painted or tented for termites, SOMETHING... but she won't tell you about it until two days before you're ready to go.
I suggest you buy NON-REFUNDABLE plane tickets ASAP.