0.50.0 ends right before the departure to fight mina. Did you download the previous version from here as well?
Viewing post in Third Crisis v0.50.0 Released! comments
Oh, interesting. Yes, I did check it again and the previous version I had (0.49.0) actually seems to stop just one fight before what I assume is going to Mina.
To be clear, on the previous version I could train with Rida only once and then she disappears and the content ends, while in the new one I can do one extra fiend fight and she stays available for training multiple times before talking to Lady and interacting with the sign. Is that correct? It also already had the SuperDad outfit for sale at least, didn't try to buy it though.
I am considering supporting this because I enjoyed it way more than I thought I would, just can't do it right now unfortunately.