The things we do for the ones we love.

I hope you don't take this the wrong way, but It's good to know someone else is living in my world now too. LOL

Cali, one of my heater vent babies did that and still to this day tries. It's a battle to keep her off my neck, nipping on my ear. We have come to a compromise and she now gets a chunk of my hair and falls asleep sucking on that. See if you can come to a compromise too before your ear looks like raw meat.
Or if nothing else you can always have another piercing whole in that ear, made by love.

Hope your ear feels better soon, but your a good surrogate mommy and as with all mommy's a little pain is worth it in the end.