Web pages problems on iPad 2

My wife is having difficulties when she is on websites in Safari. On her online banking page, for example, suddenly a command button to summit information will not functio, or, when filling out an order page on a web site, all the information she has typed in disappears. At times, Safari crashes completel.

She has cleared cache and history, as well as done the hard restarts, but the problem persists.

She is running the latest IOS, and all apps are updated as needed.

Anything else she can try?