I've seen this mentioned before in the main forum but I couldn't find it by searching.

I've just started a new generation and was mildly surprised when no proposal was received after a few minutes. When I looked at her details screen Kristania shows as having six kids. The family screen doesn't show her as having inherited at all; she only appears as the youngest child.

This is my oldest family that's been going since the game was first released, but I assume the only thing I can do is to restart them?

EDIT: I forgot to say I tried renaming the backup, but that shows her the same, so was presumably made after the problem happened.