Greetings, I am flying SEA-MSP-ORD on Thursday. My 11 y.o. daughter is flying the SEA-MSP portion with me. She will then get off and meet her grandma. She is silver on Delta, I am diamond. These are separate tickets. I called Delta when I booked them and asked to somehow link our reservations so either we both get upgraded or neither. The last three days I have been upgraded and not her. I call the diamond line and they move me back to coach. The last person said I should keep the upgrade and if my daughter doesn't get upgraded give it away at the gate to the person sitting next to my daughter?? Is there a way to put us both on the list at her status? Or, should I wait and talk to the gate agent in SEA. Thanks.