Grimtooth Mobbing

[JFKH]

Clarification needed on when I mob stuff and start killing them with grimtooth, then someone walks by and starts killing my mob is it still "my" mob? Or is it considered "KS"?

Or if I start killing the mob and someone walks by and drags the mob to kill out of my grimtooth range. Is that "KS"?

Separate question is that when I do mob using grimtooth and other players feel the need to try and kill me using sight/ruwatch/detection is that against any rule? As in I would mob and they would follow me with sight/ruwatch on.