Unwarranted Banned Account

My wife logged into her PL account today after about 2 weeks of not playing to find that her account is banned. This confuses me because when she does actually log in she usually only checks the CS or joins runs with a select few group of people. She hardly ever uses the chat function with anyone other than me. Therefore I cannot comprehend the decision to ban her account. My account is fine, untouched, and accessible along with our son's account too. Only my wife's account was affected.

Can anyone speculate on the reasoning of her ban?
Yes she has submitted a ticket.

Submit a ticket to the Customer Service team. We don't discuss bans on the forums. Thanks!