Can a power steering pump fail spontaneously with no leak to the system or pump?

What is your question?

2010 CRV. My mother took her vehicle for an oil change, valve adjustment and spark plug replacement at 72,000 miles. Vehicle was operating perfectly. During the time it was in the shop, somehow, the power steering pump failed....spontaneously. No leaks at the pump or entire system....no noise of any kind. I have never head of a power steering pump failing to pressurize the system, other than if it were leaking.

What makes this problem better or worse?

total failure, p/s pump was replaced

How long has your 2010 Honda CR-V had this problem?

It happened instantly last week