Heya Niro! Ah.. no, as far as I can recall, I don’t believe I’ve ever been in contact with a user by that name specifically (if referring to here on Tumblr).
Hehe, I don’t think I’d have any real ‘right’ to say that they are ‘stealing’ my style if their art happens to look a lot like mine. Especially since style similarities are really in the eye of the beholder. Some may agree, others may not. If they do happen to be referencing off my art for their pieces, would appreciate it greatly if they would credit. But, again, I’m not aware of this person/their art myself, so as long as there’s no tracing, edits, or anything to the pieces I’ve made, I can’t really do anything about it. (Plus, a lot of folks tend to attempt draw my interpretations of the Fazbear crew. Why, exactly, I won’t fully know, since they aren’t that ‘unique’ and I majorly base mine all from Kayla-Na, especially Chica. Could possibly be just that!)
But thank you for wanting to bring this to my attention, in any case! (Haha, and no worries, no flaws here!