This is Aleena (named by Selene Kerstin), an orphaned puppy with high-level autism along with the lack of speech. She can speak, she just rarely speaks to anyone other than Selene. Being an unwanted baby, her biological mother put her in a home, and she still visits Aleena often. However, the little girl doesn't even recognize her real mother as family. Aleena is awkward and not very social towards the other children, and when she see's strangers she starts yelling and shaking her head over and over, which turns potential parents off. She doesn't understand why nobody wants to adopt her and is convinced that she is too ugly or weird to have a family. She is clumsy about herself, even when she tries to clean up her messes.
However, Selene's motherly affection towards Aleena brings out so much beauty, creativity, intelligence and love within her. They are a match made in heaven.
Sadly, Selene chooses not to adopt Aleena yet due to the nature of her occupation as a demon hunter, which breaks both their hearts.