Creating Recovery Discs

My daughter's laptop is having issues and we need to send it off for repairs. We did not create recovery discs when we received it. I tried to back up her personal files--not sure if that was successful--while trying to recover her system with the Dell backup & Recovery last week. I was not able to complete the recovery process.  I just created recovery discs and I received a message that they were created successfully, but is there a way to check them? The backup and recovery option I tried last week was not supposed to damage system files. I am wondering if the recovery discs I just created will recover her system or if I need to purchase a recovery disc from Dell.

Thank you,

Cathy