Nytmare
David Jose
It takes a little bit of tweaking (most of which is easy enough to do on the fly) but I run a solo game for my 10 year old son where he controls only one character. Depending on the adventure du jour, I usually stick him with one or two NPCs; but it's really not hard to do at all.
I'd caution against having her play more than one character at a time. In my experience having a player handle more than the combat aspects of more than one fully fleshed out PC gets to be a pain.
One PC, and a handful of NPCs built off WOTC's monster builder should be more than enough for you to run her through a game where neither one of you has to focus too much on the intricacies of a full party of PCs.
I'd caution against having her play more than one character at a time. In my experience having a player handle more than the combat aspects of more than one fully fleshed out PC gets to be a pain.
One PC, and a handful of NPCs built off WOTC's monster builder should be more than enough for you to run her through a game where neither one of you has to focus too much on the intricacies of a full party of PCs.