>>538350497
If you're pretty early on you'll get a second chance
If not, open toybox (default is control-f10) and go Search 'n Pick -> Etdues -> All and search for Cassia Romance Active
Then hit Start, and remember to press Save, then Close in the bottom left.
I haven't tried this for Cassia's romance specifically, but this is generally how you use toybox and it should work.
If you haven't installed Toybox, I highly recommend it
https://www.nexusmods.com/warhammer40kroguetrader/mods/1