Yeah i thought that was weird, but she said rolling her face is painful. I’m thinking she likes to use her face rollers before washing her face, and she just uses the sheet mask as a barrier.
I get the impression that she really just uses the sheet mask as a soft barrier while she uses her face rollers since her face is too sensitive to use them on her bare skin. So, it doesn't really matter that she's washing off the sheet mask's serum/moisture or whatever. 'Cause she's not actually using it for that function, anyway. She's just using it to protect her skin temporarily.
This person is way too obsessed with skin care for her age. Enjoy life and leave skin care and all those tools when you are much older. You don t need them.