meowhouse wrote: I didn't even realize she hadn't told my sister until she emailed me and said my mom was all "Oh I went to the store today and the electric bill came in and oh I have leukemia and am starting chemo next week, BYE!" She said she didn't want to worry her.

Anyway she doesn't seem to be too concerned but her children are and I'm the closest geographically, although not that close that I can just pop in. She says she'll be fine to just go and have the treatment and take care of herself alone. It's just that I can't just run down there with 5 minutes notice.
Our small family - mother, sister, uncle, nephew, niece - were gathered in my sister's home for what amounted to my 50th birthday lunch. I had made up my mind to tell them once the meal was eaten but, in retrospect, I can hardly believe how matter-of-fact I must have sounded when I broke the news of my diagnosis. I had some cancerous cells in my throat/neck but there was not too much to be concerned about, it was all in hand, and soon I would be having a course of radiation and chemo and would be right as rain. So that's all good then.
Truth is, all I knew about the disease is what my oncologist told me and she had managed to convey all the information I asked of her in a matter-of-fact way that I must have found compelling and infectious. Even when, for the purpose of the press release (I was determined to control my own media agenda, rather than have troubling and incomplete stories trickle out, that I would by then be too ill to deny or confirm *) she authorised me to say I had "advanced local" (meaning it had not metastasized) cancer, it seemed quite reasonable and non-scary coming from her. She was equally measured when I asked her what would happen if I took the option (which she had not in fact offered) of
not having treatment. "Oh, in that event," she breezed, "you have about a year to live, maybe less, maybe more."
My point here is that cancer patients, when the moment comes to share the news with loved ones, do not intend to deceive or downplay. We know in our hearts how serious the condition is, but we also know that we are not - yet, at any rate - going to die, and that cancer comes with all sorts of cultural baggage - the dreaded "Big C" - which means the most negative scenario will almost certainly be the
first place our loved ones will visit. We want to spare them this however possible, because we briefly went there ourselves.
On the matter of family support, again this is going to vary wildly from patient to patient. I had my treatment in Nottingham, but I resolutely refused to have either my mother or sister come over from Dublin to take care of me for the duration, something which caused both of them a great deal of angst and upset. But it was something I had to get through, and stay focussed on, more or less on my own. I reassured them that when the treatment was done, I hoped they would help during my convalescence in Dublin, which is what has transpired.
Meow, obviously you know your Mom better than I do, but my feeling is you have to take her at her word, however much worry this causes you. I felt during my own treatment that my own wishes were absolutely sovereign, even if I could not always communicate the logic of them to other people.
[* ps: on the matter of controlling the media flow, soon after the press release, I Googled myself and the cancer and was delighted to find that EVERY source - from the bloggers to the New York Times - presented the information as they had received it, some of them even using the exact words we had offered.]