I would have recommended Brave Halfling's Dagger for this, and then importing whatever ideas from 5e you like, but it appears they're not selling it anymore. Something very simple and minimalist that she can have and read her own copy of (and that is therefore very short and simple) will help...
*Sigh* Well, good to know. At reddit someone suggested Life or Knowledge for Raven Queen clerics, that might just be the way I end up having to go for now.
So as a brain exercise I've been trying to build an essentials-style Warlord subclass based around controlling a retinue of minions... I'm sort of feeling like it's not very focused, but here's what I have done. Please share your opinions as to whether this is a worthwhile endeavor...