Is it right to close credit cards post retirement?

Closing credit cards can drop the score a bit because the credit limit available on that card with not be taken into consideration while computing her credt utilization ratio. so, the ratio might increase if she has credit card debt. Therefore, take this thing into consideration while closing your credit card. It is always better to keep at least one credit card and repay the balance at every billing cycle.
You can check out here:
https://www.debtconsolidationcare.com/blog/personal-finance/close-creditcard.html

Anyone has the right to close a credit card account at any time. However if the card has no annual fee, it doesnt hurt to keep it open. She will need clothing and personal affects and might want to use it.