(her FA has some NSFW art, be warned) http://www.furaffinity.net/user/brindle/
I paid for a commission from her on January 23rd and it just seems like all activity on her account just stopped on the 26th or so. I sent her two notes on FA, one on March 22nd and the other on April 20th. Both are still unopened. I e-mailed her address she gave me for her paypal on March 27th and on April 20th to just check how she is, with no response.
Has anyone seen her at all?
Update 5/15: Thank you everyone that helped. I'm glad to find out she's okay! She e-mailed me to say she didn't know she had outstanding commissions and then tonight uploaded the one for me as well as a few others. ^_^ It's beautiful! So everything's resolved!