Burying her in skinks seems valid, though does require the painting of a crapton of skinks...

Let's see how many skinks would we need:
30+ skinks: 1/3+/5+/-/1 = 2/9 wound/skink with a 3+ save that's 2/27th wound per skink, for 16 wounds would be 216 skinks. Now add in some buffer to Ensure we retain the horde bonusses & an extra unit just to make sure. I'd say bring 280 skinks (so 7 units). It's only 1400 points, and it's not like they're going to be wiped out any time soon even if they do fail to kill her. Totally valid tactic.
Minor sidenote, has anyone ever tried just bringing 2000 points worth of skinks to a tournament? I wouldn't be surprised if it's actually fairly effective. You can't remove the horde bonus from all of em and with 400 of em they're bound to kill something each turn.