Thanks for your comments:
With regard to "If the result of your daughter leaving was that you were the only person on the policy, then you should had returned to a Single HDHP policy".
I am a single parent, but I retained family coverage under my employers plan. Your "should" is noteworthy. I retained my family coverage with my daughter (while she secured individual) coverage with her new employer so I could contribute the max to my HSA.
Was this an error?
Secondly, the core issue of the second question is, can a child under 26 with two HDHP's be a qualified under a family plan (ib this case mine), while contributing to her own HSA account? If so, she would start a HSA prior to the 2019 tax filing deadline.
Thanks again.
