Casual Duo Levelling with PaladinFollow

I've posted this question on the Paladin forums and they've referred me here.

I've convinced my fiancee to play WoW with me and she has rolled a mage. My first toon and only 70 is a mage so I'm pretty familiar with the mechanics and how to's of the class. I've rolled a Paladin to run alongside of her.

Anyway, as per suggestions in the Paladin forums I've rerolled protection so that we can AoE when we both reach the 30s (we are now 23). I am inquiring as to how she could boost her DPS as I am currently higher on the meters - which is really shocking to me.

I've looked a bit deeper at our combat logs (I'm a pretty hardcore gamer, whereas she is a total neophyte but getting better) and it seems that I'm dropping mobs before she can get her second fireball off. Is there a better way for us to pull single targets so that they go down faster (and that she is more responsible for dropping them)? She is currently specced Fire (moving towards 10/48/3) and she really enjoys hucking giant columns of flame.

I've suggested to her (and we haven't tried it yet as she just learned it) that she follow up her first fireball with a scorch to get that second spell off before I hit it with my sword. Are there any other tips that you vets might have?

Thanks in advance.

Her character can be found here.

My character can be found here.

Thanks again.