Just a criminal. She appeared to not be targeting innocent civilians, but particular people. Terrorists are usually part of a larger organization that has a religious belief that they are killing for and target innocent civilians.
Targeting non military in a non combat arena is the same as targeting innocent civilians.
She created terror for those that watched and those that got hit.
A terrorist does not need to be affiliated with a group...it is one that creates terror.
We are at war with terrorists, yes, but not all terroriusts. Only those that are linked to a large group with an agenda.
McVey was a terrorist as was the una-bomber.