Zephriam on DeviantART.
Zephriam on FurAffinity.
And another FurAffinity account.
Zephriam on Furcadia, among many other alts. I am not sure what alts she has currently, because she's a known trader, but I know she won't part with Zephriam, and I know some alt names are listed in the thread below.
WHERE: Art trade between me and her turned commission.
WHAT: She asked for character lineart. Agreed price was $12.00. Art can be viewed [ here ]
WHEN: 2010. Image was originally submitted on my old deviantART account in August 2010.
PROOF: Screenshots of notes are provided here. I am the OP, Lau.
EXPLAIN: Originally, this started as an art trade. Then we decided she'd pay me 12 dollars paypal for the art. And then she never paid, and when I tried to contact her about it, repeatedly, she always never had the money or had some sort of crisis. While commissioning and paying other artists. I didn't want to resort to this but I see no other options. All details are explained in the thread linked in "Proof".
EDIT: Added DA/FA links.
EDIT 2: Added the new FA link as well.