hm. It sort of depends what she's asking. If she has a complicated, maybe upsetting to her, situation to explain, and then a question to ask that requires some thought to answer, I can understand her wanting to do it by letter. Not to be coy or manipulative, but just because some things are easier to do in writing. I find it especially hard to discuss complex emotions on the phone, because I feel that I'm only catching a fraction of what the person is trying to express when I can't see them.
On the other hand, she has to accept that by sending stuff certified (what's up with that, anyway?) in the mail she has to wait until you have the time and inclination to do something about it. She can't expect you to hop to it just because this is important to her right now.
I have a family full of people like this...
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett