how to find something that make Alissa happy again after she fail to get a job?
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.