I can actually confirm that she claims to have made mixes, albums and the like that I know the origin to as I lurk OCR, ReMix:ThaSauce, various Japanese, Chinese arrangement communities and artists'/groups that actually release albums as well - that I've heard her claim as her own, she has actually harassed me and asked me to model (really made me go WTF!) for her "album covers" after seeing some photos of me on The Horror Is Alive dressed as Jill Valentine and then to voice for her as some characters for some sort of "Resident Evil remix X drama album" she told me she was apparently working on.
She words things carefully, but when speaking with her privately she claims credit to things that I know she wasn't responsible for as I recognized the artist and could go through my CDs to find some burnt copies of albums that didn't have disc releases, or even on my hard-drive to find the remix with it's original name, the original version.
Overall, she's rude and quite a liar and I know that she has also picked up some MIDI remakes that people have made of their favorite VGM, changed the instruments and claimed it as her own among other things.
When I brought up some of the artists' she stole from, she quite honestly got pretty pissy and had bit of a rant about how they didn't apparently appreciate her, and she was also pretty avid to avoid discussion of them and OCR and after that she would forever be putting on her Skype status crap about people thinking she's a bitch and so-on and that they just don't understand or appreciate her "talent".
If anyone wanted to speak with her in person on the matter, Cindy's Skype is the same as the YouTube account - lightningxlita
My apologies, if I had realized the extent of her plagiarism earlier then I would have reported it on OCR long ago!
[Edit] She might vanish again, but her names are usually fairly obvious and she tends to subscribe to a couple of friends of mine on YouTube as she likes the parodies we do so it shouldn't be hard to find her again if she makes another account and does it all over again.