Yes, I went over this link, too:
https://nrwe.justiz.nrw.de/olgs/koeln/j2023/15_U_208_22_Beschluss_20230120.html
It is a very, very, very extensive consideration of context, after Ms Vollbrecht complained about a "narrative". The court went over how she was framed as anti-trans after the event at the university in Berlin, where the university had to backtrack (after supporting the view that there are more than two sexes, coming from a renowned research university; and had tried to ruin her reputation).
The court also points out that TRA already had her in their sights and were just looking for something they could sue about, and that, given Ms Vollbrechts education as biologist and her conduct as a citizen (democratic, not a holochaust denier or anything), it was clear she wasn't denying that individual trans people could have been targeted by the Nazis, but the narrative and the framing of transvestites as separate group targetted, comparable to Jewish people (if I got that right, she wasn't denying either that transvestites, crossdressers and others existed).
The court even points out that official free material by an education institution financed by the state (as @Igneococcus said), agrees with Ms Vollbrecht's perspective (line 14 in the judgement).
This court case debate is perhaps comparable to that "most oppressed minority" story from current times.
The conclusion from the court is that TRA are permitted to say that she denied something, but it is not permitted for everyone outside of the debate Vollbrecht vs TRA to claim denial after her tweet - because even the state of Germany agrees that they were not an equal "target" group compared to others - which does not seem a very logical conclusion but it seems the court tried to look at the problem from all angles and finally found one where she was wrong.
However, this is not a very clear cut simple court decision saying she was outright wrong.