Stand up for yourself, Jane! You are an intelligent person, who also needs to be treated like one!
Not being able to communicate in her position, is like trying to get a thread into a needle- in darkness. Her work will not get properly done! If she wants the others to respect her leadership she has to learn how to respect them first! Or she will sit there with her thread in the darkness...
I don't know... but I think I would try to talk to her myself, in a gentle but firm way.

I hope this blows over for you Jane, as quickly as possible!

(((((((((((((( Jane )))))))))))))))