Priv - Can I uninstall BBM then reinstall it?

When setting up my wife's Priv, I used the wrong email address for her BBID during setup, and now the BBM app won't let me change it. It's a bit of a drag, because now BBM won't populate with all her old contacts.

Someone suggested maybe uninstalling BBM then reinstalling it, but the phone will only let me disable it, not delete/uninstall it.

Any ideas?

Thanks in advance.

John