I commissioned an artist on dA for a $45 clean-lined, colored piece in December. She sent me a cleaned up sketch several days after I paid and promised to send the final piece a week later. I haven't heard from her since then. I've sent her multiple emails and notes on dA, asking about my piece, but it looks like she hasn't logged onto the site in 17 weeks. She hasn't responded to any messages either.
I've drafted an ultimatum to send to her. Is it wrong of me to ask her for a full refund though, in the event that she doesn't send me the final piece? I'm not sure if I should ask for a partial refund instead since she sent me a sketch (showing that she did some work on my comm instead of doing nothing).
Thanks for any advice!