I am a ‘senior woman’ in metaphysics, I enjoy giving talks, and I am glad you are looking for a female speaker. However your well-meant invitation is unenticing when it dwells on the de facto agenda-setting work of my male contemporaries, expecting me to prepare a talk on that basis. (Three times this summer.) Tip: invite speakers to discuss the topic at hand, don’t frame it via that guy who recently published those articles.
(Yes, there’s a place for author-meets-critics, for festschrifts, and for invited comments, but those are not the events I’m talking about. And yes, I really think you mean well.)