"I've always wanted to be a nurse, but I didn't get the chance to go to school. So, this is what I'm doing...so I thought I'd volunteer," said Rock.
At 82 years old, Rock sometimes spends 10 hours at a time at the hospital.
"Sometimes I go home and then I come back," said Rock, who has accumulated 17,000 volunteer hours.
"Seventeen thousand hours is a lot for someone who's been here 15 years and I think it's because she come here 4 days a week...and she works so many hours so it just shows how much she's willing to do for others," said Carol Martinez, manager of volunteer service.
Rock is a bit of community celebrity as she's known for dressing up as the Statue of Liberty in the Fourth of July parade.
"I've done it every year. I didn't want to do it this year because I thought they were tired of seeing me but they said, 'Nope. We want you to wear it.' So, I'll be statue of liberty again Thursday," said Rock.
A fixture in the parade- and at the hospital.
"I'm helping people and I like people... and that's about it. I enjoy it very much. I didn't ever realize that I had that many hours in until they told me," said Rock.
