What's the point of coming back from Hiatus just to graduate 3 months later? She has a damaged reputation. If she wants to work in the entertainment industry, she needs time to repair it.
Her saving grace from everything that happened, she'll leave with a good memory that will hopefully overshadow the bad juju.
Won't be surprised if she comes back just to graduate. Also correctly predicted that her suspension will only be until summer, so she'll have time to resume activities by fall.