Thanks, all, for the thoughts.
Frogpatch: There's absolutely no markings on the back, save a gold plated ring. Attached is a picture. The last example picture you provided is hard to make out, but it doesn't look like the same style. Of course, I'm not an expert and the picture is a little blurry. It does, however, seem like it might be a young queen Victoria. Her nose is unique and very similar to the images in the Google search you provided. It does look very similar to this style, however:
http://www.bonhams.com/auctions/17836/lot/187/ The brush strokes and style are very similar, although the vase on the bonhams site is much more carefully painted / symmetrical, which leads me to believe mine is older (does that make sense?) or just done more poorly. I do know that the collection that this came had quite a few very rare pieces.
Anyway, I attached a few more pictures, in hopes that might help.
Thanks again!