In the section where Turbotax asks about HSA HDHP plan coverage of my wife, is it referring to my work plan (she has) or additional coverage outside of mine? (she hasn't)

[revanisle]

She has no employer and no coverage outside of the family HDHP plan provided by my employer

[KeshaH]

It's asking if she has her own HSA plan. You would only indicate that you have a plan and show that you have family coverage to determine your limit.