TOPPENISH — Cassandra Silva is as relieved as any recent high school graduate can be this time of year.
The Toppenish High School alumna, 18, finished in the typical four years. But her final year was anything but typical.
Last summer, a devastating car crash in Zillah drastically altered Silva’s life, along with the lives of those close to her.
As a result of the collision, Silva required lengthy hospital stays in Seattle and a long rehabilitation. But she kept…