If you were enrolled on your mother's plan, indicate that you shared a plan, but did not receive a 1095-A. You'll then be asked for your % Allocation. Since your mother paid for the insurance, she can allocate 100% to herself and 0% to you.
She will also indicate that you shared her plan on her tax return. This is so the IRS can match the data between your returns.
Here's info on I'm on my parents' 1095-A form. What do I do on my return?
@mckennaparsons
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
