Can my 17 year old file her own W2

[Bsch4477]

Sure, but be sure that she checks the box saying that someone else can claim her. 

[xmasbaby0]

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/

[WoodyHayes]

Where do I find this box to check indicating no one else can claim her as a dependent?

[xmasbaby0]

@WoodyHayes  Go to MY  INFO (or Personal Info if you have desktop software) and go through the interview screens for the questions about whether she can be claimed as someone else's dependent.