Colleen

To turn Coleen into an Alpha you need to keep transforming her, but at the point when she asks if you'll be her master refuse. This makes her into 'Coleen the Stray'. You then need to have sex with her while being female. At that point, she should ask if you want to be a slutty husky as well. If you agree, she'll become the alpha female and will be infecting you with 'Female Husky'.