I see one of two things happening:
She's not "there" yet, but she's building and preparing for an ovy.
OR
She's already ovy'd and you missed it (entirely possible, because some girls are sneaky), and the first was a standard shed.

I'm leaning toward the former, based on your description of a lack of pocket from holding her upright. Plus, she's still locking. If I'm right (which I'm no breeder yet, I've just picked up some knowledge from the board haha), she'd quit locking after an ovy. Feel free to correct me if I'm wrong, breeders!