She keeps taking credit for my work in meetings - eg saying things like "we sent that to you" to my boss when she was nothing to do with the work, or "I made lots of edits to the agencies work" when I made all the edits and she did nothing.
Also - she keeps sending emails to other teams which I am copied in on saying "well from my perspective, we can do X, Y and Z". Thing is, the XYZ that she proposes are things that fall under my role - but I know she feels more comfortable in my specialism and is always trying to encroach on it and do more of it. How can I stop her from being so sneaky? It's not the sort of environment where bitchiness is tolerated.