I think the only creature that can bite through her armor is a burrow beetle, the others can't but are still dangerous. Stinging ants will bite you through the thin parts at the joints and try to crawl inside your armor. Lizard dogs will go for the face and even if you're wearing a helmet they might get your neck, they also have the powerful tails that will do some pretty bad damage even with all that armor, they may not bite off an arm but they could definitely break one with those tails.