I know you can't copyright a pose,
18 years ago
General
Guaranteed to put you to sleep faster than Ben Stein reading the periodical table of elements!
I know you can't copyright a pose and all, but uh, doesn't this seem like a bit TOO much of a coincidence?
http://www.furaffinity.net/view/374232/ -Mine, over a year ago, for Zekumas.
http://www.furaffinity.net/view/1115227/ - Theirs, for Zekumas.
Not trying to be all "ZOMG ART THEFT" because it's not, just, buh?
FA+

I can see where you are coming from, but I think you may be looking a little to hard into this, maybe? Poses like that are pretty common from what I've seen.
Just my two cents, I guess *shrug*
Have you tried talking to teh actual artist about it, not just try and ask others about it (and possibly put some bad marks on the artist's name because you should know how easily fans can be affected by an artist they likes words. If they really start believe she copied off of you, they could start talking ill of her. Would you be happy having started that?)
I left them a comment. 1) I have not said anything bad about Solemn, so the whole guilting remark of "Would you be happy having started that?" is completely unnecessary. 2) I expressly said I LIKE Solemn, this is just bad manners
I understand how this would be a little annoying though.
Yeah I went through a little /trip/ with her last semester involving some things I'd rather not detail here. Put me under a LOT of stress and depression I didn't need.
If you wanna know the details PM me. I won't say this stuff in public.
However, know that this person has a track record.
The person did do an update on it from what I saw: http://www.furaffinity.net/view/1115702/ (NSFW M/F interaction)
You can tuna piano - but you can't tuna fish..!
Ya dear flatterer! *hugs Sharra silly!*