You have a shared plan and have to allocate the figures between the two tax returns. See the screen shots below.  The pro-rations must add up to 100%. You can also click on the blue link.  What percentage of the following policy amounts do you want to claim on your tax return?  See "How do I figure out these percentages?" when you get to that screen.

Child/Children on another tax return

If you share a policy with someone who is claimed on another tax return (usually a child), you can take the number of people on your tax return who are covered on that plan and divide it by the total number of people on the plan. This would be your percentage of premiums, SLCSP and advanced payment of the premium tax credit, unless you agreed on a different number beforehand

I am afraid that my phrasing was wrong.  My daughter is under 26, but not a dependent because of the amount of money she earned, under $7000.  She is living at home now and is between careers.  Does this change your answer?

No, the shared plan is when you have someone who shared your ACA plan but files their own tax return.