The sweater that won't be knit

Ok, so, I'm really really trying to get Poppy (here and here, as well) done. I want to have it to wear for SPA. I've had to put it aside for soooo many other things, holidays being the biggest culprit, but now, with all clear, for some reason I just. can't. get. it. done. One sleeve left people! ONE SLEEVE! I've been putting in a row here or there, and this morning thought I was finally past the increase section until...
wait a minute...
how many stitches should be here???
Shit.
RIIIIP.
This is why I was an English major -- can't count. Way too many cast-on stitches. UG.
The little girl is home from school on day two with conjunctivitis. (Docs didn't call in her script until mid afternoon! Don't get me going on that frustration.) I'm going to take her to see "The Waterhorse," and am hoping ot get some knitting in there. Problem is, I just KNOW the sleeves aren't going to fit into the armholes. Sigh.