This IS a serious issue. Rude and lazy is one thing, but making a system of taking icons and not crediting and then USING in online contests is very bad. One day, she might steal the base of an artwork or photo and submit in competition held by a company. If she wins a price and is caught afterwards, all hell can break loose!

Shiny found her DevianART page: http://25djadja.deviantart.com/gallery/

How much of this has gone on over at Yuku? Have you alerted Lady Kate?

This is bad...