“This card is not to be used for identification”
“For Social Security purposes - Not for identification.”
Seems to me the casino was using her SSN for identification, not her name. And that is illegal. It says so right on the Social Security card.
When winning a $1200 or more jackpot on a slot in Vegas, the casino has to fill out a form to send to the IRS. The form requires your ID and SSN. This happened to me many times.
The SSN is not being used for identification, but to report your income to the IRS.