21 year old dependent full time college student earned $2,832

Does my daughter need to file her own income taxes for earning $2,832.  Based on the page link below, she does not need to file?  But if she doesn't file, what about the $151 Federal withheld and what about the $176 paid towards her future social security?

 

Daughter went to college full time in 2019, and I will be claiming her as a dependent living with us parents all year in 2019.   I don't add her income to the parents' income, so just curious...

 

I found this page that I think answers my questions, but I will appreciate confirming or additional input.
https://turbotax.intuit.com/tax-tips/family/should-i-include-a-dependents-income-on-my-tax-return/L6...

 

Thank you!

Frank