Me and my two flatmates are renting an apartment from our landlord through an agency. The only name on the lease is the one of Flatmate 1: each month we give him the money and he pays the whole rent to the agency. Flatmate 2 has been acting terribly since the start of the pandemic situation and endangering us, for example: going to public places when we asked her not to, not washing hands, taking trips, etc.
Also considering Sweden's response to corona, I am afraid we don't have legal grounds to kick her out. But since her name is not on the lease and it's basically as if Flatmate 1 is letting us stay here, how does it work? Is it legal to just give maybe a two weeks/one month notice to her and tell her to find another place in that time? Or is there a timeline we need to respect to not face legal consequences? Thank you very much.