This is a nice match. Jane is 5'4" (162.5cm) and will be 58yo on February 15th. Sarah is 5'2 and 1/4" (158cm) and is 31yo, turning 32 on April 14th. Jane is a trained dancer and a bit stockier. Sarah is younger and probably a bit more agile. I think this will be a very good and tough fight, but unless Jane can put Sarah away early, the younger woman may take it on stamina.
I am also reminded that a few years ago, Sarah and Faith Hill were put in a catfight situation, in bikinis, on Saturday Night Live. The producers blew it by having a couple of the male performers spazz out over the potential catfight, without having any fighting or wrestling actually happen. I saw Faith Hill in an interview a few days later, where she said she wanted to have a real wrestling match with Sarah Michelle Gellar during that segment. Too bad SNL didn't let her have her way. Too bad it wasn't on MadTV instead.
Faith Hill is 5'8" (173cm) and is 41yo, turning 42 in September. I think that would be a great fight, too, but my money is on Faith in that one.