Clark College (downtown Vancouver) offers good technology, Check with admissions and with Running Start coordinator, Linda is a very good source of info.
Academics - Running Start
Portland Community College (and probably Clark too) offer good graphic arts options. She can take the bus into Portland, but the Albina Campus of PCC may not be the safest place for a teenage girl, she might be best sticking with Clark and Transferring to a more specific program after a couple years.
I would be tempted to live near Ft. Vancouver, even renting an Officer's Row home for awhile. It is close to transit and walkable to Clark College.