I'd have to dig through a few HDDs to see if there is stuff not here but not being able to source it (or worries of it NOT being her is the problem)
I see. Maybe there's some chance you'll find something with her signature (glitchedpuppet signature) -- the "PK08" in this image, which stands for 2008, so "PK09", "PK10" etc. could still be used for other years. In some cases like post #1179373 the signature seriously looked like "PKR" to me, but it's actually just a predictable "PK12". Some of her images don't have a signature at all. (glitchedpuppet -signature)
Also, if you click the source of this image and navigate the Web Archive version of purplekecleon.deviantart.com, you'll find some miniatures of her other images. It may be a stretch, but you could happen to have the full size version of one or more images where just the miniatures are available in the Web Archive. I'd say this is enough to consider the images sourced.