I've honestly been waiting a little over a month for a piece from her as well now. I wasn't even on her queue until I contacted her manager. It was one of the "Buy me something and get art" journals.
Since then I haven't seen any progress, 0 contact but I've seen her post personal art and then suddenly say "Leaving for a week"
Now she's asking for money to go to Disney World. Pretty sure I won't get that piece and I will have to just force a refund.