I've been having this issue as well. I think a recent tweak has caused it to have trouble decoding its context (things it should remember from the character card, summary, previous messages, etc.). It feels like it pulls out a few keywords and hallucinates everything else, including the actual situation where those keywords came up, even when it's written in the summary and/or character card. Maybe the dev is working on expanding the context window (the amount the AI can remember), and that's causing some glitches in the meantime?
There are some workarounds to reduce the impact until the dev has a chance to sort it out though. In addition to what others have already said, another thing you can do is edit the reply and use auto-complete. To do that, double-click on the AI message. In a case like this where no part of the reply made sense in-context, I would just delete it all and write something like, "Mona paused, thinking about their beloved children -- Felix, and the twins Takara and Aiko still in her belly." Then you hit the "▶️ auto-complete" button in the bottom right corner of that message, and it should finish the rest coherently. Also if you start the AI's message in German, I would expect it to finish the message in German too.
Thank you so much for the update and for all your hard work! I'm grateful to know that you are reading user feedback.
By and large, I've been really happy with the new text gen. When it works well, it works really, really well. There have been a few times that it was working amazingly and I was really impressed by the quality -- times where it took a really complex scenario and performed beautifully, picked up on foreshadowing, did a great job at portraying nuanced characters and writing realistic in-character dialogue, etc. with minimal corrections needed.
I also already find it a huge improvement from the old model in almost every single way, outside of times the model starts severely and repeatedly hallucinating. More than anything else, I'm so, so glad that it isn't afraid of dark themes like the old model was. I love that if I give a character a dark backstory, it will sometimes add to and embellish it, and will also bring those details up when relevant of its own accord (without me having to repeatedly instruct and nag it to do so). So I've been really happy with the update!