TIW card question

If I buy a TIW card can I get a second card for my DD 21 and same address? We will be going on trips without each other this year.

It says you can buy an additional card for $50. It is worded “for your spouse or partner” but I have heard of others buying it for a family member.

Here is the page:

Thank you. I was hoping that it could work just didn’t know if anyone tried it before. I’m going to try it once the trip gets closer. DD going after college graduation to celebrate.