Thanks for the replies. I could apply her eCredit for her ticket from my account but I couldn't combine with miles. So, since the outbound and return were plenty far apart, where IRROPS in one wouldn't effect the other or her schedule, we used her eCredit to pay for one-way outbound in First, and used my miles for one-way return in First. Priced out pretty similar to the round-trip pay with cash&miles option. She even still has $15 remaining eCredit.