It all depends on who your daughter works for. There is another system for electronic ticketing that UA uses for quite a few airlines, and I'm sure others do as well. Though I believe WN uses myIDTravel almost exclusively now.

That said... better routes? Maybe, depending on where you're going. Sure seats? Nope! Even though you're paying for it, you're still standby. And you're also at the bottom of the list. But maybe that other airline has more seats than your own from time to time. Or maybe you could use a mix of ZEDs and your own airline.