I don't think it's any surprise that women get obsessed with victoriana. It's the moment women begin really making a difference in gaining their rights and freedoms. I mean the obvious character is Mina Harker in Dracula who is considered a New Woman merely because she has a typewriter and can earn her own living. And, of course, in the history of the anglosphere forced marriage was very rarely a threat, you don't get stuff like Austen written on mainland Europe where women usually had no choice in husband.

If you are a woman looking for a piece of the past you can use in your larping time then periods where you can do what you like and have a tiny bit of respect are pretty scarce so you will end up with a narrower range of interests than if you were involved in a group which had a more hands off approach to history.

The corsets are just a vanity thing.