I haven't been playing very long so im not all that experienced with ability interactions but one of the other players in my group is a Lhianan who has proved worrying. She has proven that she can and will brutally murder allies if it means she can kill her enemies, even cheerfully declaring that she turned the Caitiff-Shield a Tzimisce turned one of the other players into chunky salsa.

The thing thats most worrying is Ogham. It lets her turn off the disciplines of anyone she knows the name of and uses Protean to grow claws that deal aggravated damage.

How do I counter...