I would be watching her closely, as I'm thinking she's more in the "going to foal within the month" range -- so leaning more towards the 332 side. I'm never concerned about udders, it's always a pleasant surprise to me when they grow them for the first time, which gives us a sign the 2nd year that we can go by. But these maidens are so tricky, you just can't count on them for reading the book AT ALL!!
Especially, if you're noticing other signs, I'd be careful and start watching her more for any new changes. Is baby lining up? She still looks pretty "full", but we know how quickly that can change with some good rolling. Have you noticed any change in her pH? I know you test milk, and just wondering if there has been a change in that at all?
Keep us posted. I think she's got some time to go, but she is moving ahead, that's for sure!