I stole this from someone else, but it's the best "Get your faery into Obey/Heel" macro I've used so far...

/tenemy
/pac Obey <t>
/wait 1
/pac Heel <me>

This way you automatically target a nearby enemy and don't have to worry about switching from a group member to an enemy, etc. If there's an enemy around, the macro will work and you will have your pet in the right stance.