Let's open the DVD page for more details. page confirms the German title "The Widow - Dozentin für gewisse Stunden" and a runtime of 90 minutes (or 103 minutes elsewhere). The IMDb review is quite detailed. I'll use that.
"The Widow" was produced for and distributed on LustCinema, Erika Lust's curated platform for cinematic, ethical adult content. The platform, alongside XConfessions and ElseCinema, offers a diverse library of over a hundred films created by directors from around the world. LustCinema's success is a testament to its approach, which focuses on sensuality, tension, passion, and real storytelling. The platform’s curated content is often described as providing "kinoreife Filme" (cinema-ready films), moving beyond the shaky, low-production values that can dominate the internet. the widow nica noelle lustcinema 2019 g free