Hi selby, yes women can be mummers. I have been one. We've had a number of discussions of the cast of characters and format for mummers. If you put the word "mummers" in the main forum and digitrad search box (without the quotes) you will get a plethora of threads that discussed the topic.
If you can't figure out how to do that, post here again, and I'll make some links for you.
Blessings,
Barbara