https://www.egafd.com/actresses/gallery.php/id/A01203
contains an image of a different model: the last one from "Nachtschwester Stefanie 10" (NS 10) is not her. That model has a small tattoo on her left pelvis bone which Alexandra lacks of. Here's a screenshot from Alexandra's front chest, taken from the movie "Klinik: Die Sperma-Notaufnahme":
This movie is definitely a later production than NS 10 since it contains at least one model which did not start earlier than 2002 (Charmaine). If Alexandra is also part of NS 10, than it can only be lezOnly in a brief scene together with Judith Winner, before the bg scene of Liv starts. I haven't kept that part of the movie, so i can only provide a movie preview image from a well known forum:
Here's more of the miscredited model, which is yet unlisted for the movie NS 10. Please add, she's sadly uncredited and based on pimeyes search results it seems she's a one-and-done.
may also remove the tattoo descriptions added to Alexandra, it seems she hasn't any.