I'm sorry your friend is struggling at the moment.

It must be so hard for everyone.
You sound like a very good friend to stay by her and help and not take what she's says personally, she's fortunate to have people like you in her life.
as far as your question: </font><blockquote><div id="quote"><font class="small">Quote:</font>
is it best to try to avoid any verbal aggression that she postures? For example, if she says to me "Don't you think my partner is a misogynist?" Do I say what is true - which is 'no' or do I avoid any answer thus not giving her an excuse to build on the aggression?
</div></font></blockquote><font class="post"> I'm not a professional and you know her reactions-- I do not-- ..... but this has helped me a few times when I was in therapy-- -- maybe try asking a question back to her-- that let's her know she was heard and also the question might get her to further work through her perceptions. Like for example-- if she asked if you thought her partner was a misogynist-- you could say something like-- "OH? why do you ask that?".....
Well this has helped me a few times in looking further into my perceptions and I also felt heard at the same time-- I wasn't told I was wrong or dumb or anything-- I didn't have to get defensive, at least at that time.
Good luck. Hope she gets better real soon and you have your familiar friend back!
mandy