I have an Advance Standard ticket I bought via the RailUKForums ticketing to go Euston-Preston next week on Avanti splitting at Coventry. I used my Senior Railcard in the purchase. My partner has now said she’d like to come with me. We have a Two Together Railcard. Is there any way to use that to get her ticket discounted too? She doesn’t qualify for a Senior Railcard yet so it would either mean switching my ticket to the TTR or doing one on the SR and one on the TTR (is that allowed even?)