[Faceman]

It is not advisable to solo SoA for the first time you play it for several reasons
a.) difficulty (you're alone and missing out on crucial abilities your class doesn't have)
b.) no party interactions and character quests (which will lead you to nice items, XP and lighten up the straight story a bit)
c.) no romances

Soloing takes away a lot of roleplaying from SoA and makes it IMHO less attractive to the first time player.

If she MUST do it however I would suggest to do the typical easy chapter 2 quests (slavers, circus) and the Umar Hills quest which is like MADE for a paladin. Trademeet could be nice too but I wouldn't try Windspear Hills unless she's planning on leaving the host alone.