Can my granddaughter file her own taxes and receive refund although I claimed her on ky return?

The dependent needs to go to MY INFO, click their name, and go to the question that asked if they can be claimed as someone else’s dependent.  The answer needs to be YES.

MY DEPENDENT HAD A JOB

If your dependent has a W-2 for his after-school job, summer job, etc. you do not include the information on your own return. You can still claim your child as a dependent on your own return.  He/she can file his own return for a refund of some of his withheld wages (he won’t get back anything for Social Security or Medicare), but MUST indicate on it that he can be claimed as a dependent on someone else’s return.  (Supervise this closely or prepare it for him!)

If your dependent’s earnings were over $400 and were reported on a 1099Misc or 1099NEC then he must file a return and pay self-employment tax for Social Security and Medicare.

You might also want to use free software from the IRS Free File versions:

https://apps.irs.gov/app/freeFile/

if she already filed, she would need to amend her return, otherwise if using Turbotax, in the My Info section she would check the box. if you have not filed and she has, there is no way for you to e-file the current year's return. It will have to be mailed. if you filed before her, she must fix that answer, otherwise she won't be able to e-file.