Oh my god, guys. Corsets do not have to be torture. This is a myth. It only sucks like this, when you insist on wearing a corset too small for you. And there are only a few time periods where people were wearing such intense corsetry, and usually it was only the wealthy.
She can’t just not wear the corset, she will not be able to wear any of the dresses, or at least get the desired look, since they’re designed with a corset in mind.