User blog comment:Project Predacon/Volume 2: Post Credits Scene Analysis/@comment-11188061-20141031010036

She's Yang's mother. They purposely made it that she looked like Yang, and reused her model so that people could relate. This is different from usual animes where they drew the characters manually, and you can always notice some subtle difference between the two. When it comes to 3D two identical models are well, identical.