Thank you so much Night457 and Sully23 for your wonderful findings!

Thank you for bring this to our attention!
Kristína Svarinská (b.1989) also has a (relatively minor) role to play in Neverné hry (2003), which I'd also like to recommend.
https://ulozto.cz/hledej?q=Nevern%C3%A9%20hry

720p at ok.ru:
https://ok.ru/video/3923897813559

1080p here: https://ulozto.net/file/ubA5LjJJxKUL/sestra-2019-1080p-novinka-mkv#!ZJL2ZwR2ZJD0ZQD4BTRlMzHkMQH3ZHkIF3ucATA5DwuiJGOwBD== Wrong link. It's not same movie mentioned here. You are right. It's not Sestra (2019). Thanks for pointing it out! There is a 720p version online: It's definitely the...

HDTV rip here:
https://ulozto.net/file/wiA8Nk5jGFYB/so ... 54EJcWMQH1
Julia Maraval is incredible!

Unfortunately off-topic:
"Of the sisters, it is the younger Rayna, played with obdurate nonchalance by the photogenic 18-year-old Monika Naydenova, who is the focus of the film." (Review @ https://eefb.org/perspectives/svetla-ts ... stra-2019/)

1080p here:
https://ulozto.net/file/ubA5LjJJxKUL/se ... uiJGOwBD==

available at ok.ru (a variety of 720p and 1080p versions):

https://ok.ru/video/2047025941112

available here:
https://vk.com/video?hd=1&q=La%20d%C3%A ... %20mouches

1080p upgrade at ulozto:

https://ulozto.net/file/rNYBqX1vBXCq/di ... uVGGqaBGEy