I actually have the same question. Because she is sad about it and I have done everything I can do with rinny including they new hypno one.. but I don't see any changes with Alissa after that.
That's strange. After Rinny's questline is done, there's hypnosis therapy offered by Rinny at Succubus Tower. After hypnotizing Alissa, she should leave Cassie's base for a week before returning for a few days talking about how she worked. The next time she leaves, check Succubus Tower for a bonus scene.