She's a 7th Level Drow Cleric.
What Pathfinder Modules would be good to solo in?
That puts her at about 4th level party level...
Flight of the Red Raven should be good, actually.
Spoiler:
There's several chances to pick up helpers along the way: the tracker, the bandits, the sorceress, the Red Raven himself, an ogre. It's not too lethal if you drop the dragon encounter, which has to be a TPK in the making with no cover listed and no way to force the dragon to the ground for your character. And there's a variety of ways to take the adventure from law-abiding to mercenary to romantic heroism.
Crown of the Kobold King, despite being listed as a 2nd level party module, scales very well.
Spoiler:
And by that I don't mean that you should advance the monsters. Your PC will be on a clock to save the kiddies, but the sheer number of encounters presumes that a party will take their sweet time and rest every 4-5 encounters. It's not a cakewalk for a 7th level cleric if she can't rest. Also, there's opportunities to pick up a few helpers, although they're not super reliable.
I frackin' love Carnival of Tears, which would make a great follow up for Crown of the Kobold King. By then your PC will be 8th level and will have enough power to potentially take on
Spoiler:
It's the best module that Paizo's put out.
the evil fey turning the carnival into a real horror show.
Into the Darkness has
Spoiler:
a jungle elf back story that should make things very interesting indeed for your particular PC. Again, it's got a good variety of stuff to do and some minions to red shirt.