Since the title to a mobile home is similar to that of a car, it would "seem" the answer to your question is yes, a name can be added. But...(an there always is one) is there a lien holder? I don't know if a lien holder changes anything...so here are a couple of phone numbers for you to call:
Motor Vehicle Inquires: 602-255-0072
Non-Motor Vehicle Inquiries: 602-712-7355
Hopefully you're already done since it's been several months.