The big change will be color. Usually one eye is done at a time, so you can compare corrected vs uncorrected. Cataracts impart a dirty yellow brown coloration. Compare a pure white napkin.
The underside has an adhesive. When the protective cover is removed, dust my attach. When you remove one from an LCD screen dust can attach. So your screen wlill end up with the dust.
She needs to contact State authorities for help. Her State might have some applicable law. She should put a freeze on the bank auto debit. Her bank can be helpful with this. She should write up her experience and pass it around Facebook, Twitter, etc.