Mrs. Rodriguez got an offer from CITI bank to transfer
Her credit card balances over to a CITI bank card. No interest for 18 month. Then it would be 12% APR.

Currently she holds Bank of America 7.24% Discover 17.2%
And Chase bank at 9.99% all combine credit cards is $9,000
Do you think this is a good offer for Mrs. Rodriguez?

Can she pay it off in 18 months at 0% interest?

She can set aside $800.00 a month

Then she should consolidate her debts onto one card and pay it off during those 18 months of no interest. And not charge anything meanwhile. Pay cash only for "stuff."

great. Thank you so much

Yep, go to CITI and pay the $800/mo. Consumer debt is not deductible on taxes so any way to get it off is better.