I wonder if she regret being in

She told me she doesn't.

She told me she does.

Good or bad it is experience gained. There comes a point in a career when actors can pick or choose. It obviously hasn't hurt her career.

She told me you guys missed her birthday party.

did the check clear?
was she made to do anything that made her uncomfortable?
did she do a nude scene without added payment?

because if she got paid for her work, didn't have any issues, and didn't set a precedent as "Perky blonde who shows off her bits for free" I see no reason to be ashamed...

I cite the 3rd point not for any Prudish reasons, but if you look at Hollywood they have a Notorious double standard when it comes to 'gratuitous vs Artistic' Nudity. if she gets naked for a Syfy original (even if it gets cut/censored for Broadcast) nudity will likely find it's way into any script she's cast for.