Hurrah!
As dd2 is now just coming up for a year, and the twice-daily encounters with my trusty Lactaline have become increasingly unproductive, I've decided that's it; on the days she's with me she gets b/fed mid-morning, and on the four days she's at her childminder she gets organic cow's milk. Tried a mixture of expressed/cow's milks on Thursday (she's had cow's milk on her cereal for months anyway) and apparently she slugged it down like Nicolas Cage swigging vodka in Leaving Las Vegas, so no worries there. And I'm quite heady with the thought of giving up those two half-hour sessions...might even start cooking the dinner in advance again.
Thank you, seriously, to everyone who's been so incredibly supportive while I wibbled and wurbled and worried about expressing. Especially Mears, Pidge and Aloha. I'm very very glad I stuck with it. And, of course, it enabled me to test 11 breast pumps over the course of two weeks, which was obviously one of the high points of my maternal and professional career.