Hello and apologies for the delay in replying. I wanted to wait until I had more news.
Sofia now has a release date of mid-February and you can read more here: https://blackcrosstaylor.itch.io/ttow/devlog/210838/the-thorns-of-war-update-17
I am not sure when Charlotte's route will be release, but it is definitely coming ^_^
Many thanks for your support and happy new year