My understanding is that malocclusion is a bite problem that can cause irritation in the gums. Did she check the puppy's bite before she bought her? Generally this is a genetic problem. Between this and the ear mites. it makes me question what kind of breeder this was. She may be lucky that this person will pay half. Here's a web site that might be of help.
http://www.dentalvet.com/patients/or...thodontics.htm Good luck to Pam and her baby.