Wow, I did not expect this thread would be on a second page, let alone in 12 hours! I'll try to answer the questions posed and apologize if I accidentally forget to answer one.

One "splinter" was between her teeth and lip, parallel to the lip, but not stuck. Two were embedded in the roof of her mouth, and a smaller one in the fleshy part of the lower jaw near the trachea, that one took more of a 'tug' with the tweezers to remove. I'll be watching closely over the next week for any indication of infection.

She's a piggie, she will eat mice or rats, live, fresh killed, or f/t, she does not care. She usually gets whatever the BPs don't eat, supplemented as needed. Since I take her out pretty regularly, she doesn't seem to associate my hands coming into the cage with food, however I do use the gloves if I have to pick her up during feeding (like taking her out of the bathtub). She had never struck directly at me until last night, which I'm putting down to pain and confusion about what happened to her (she struck at the cage a few times when we moved her into her big house a few months ago, but settled down after that).

I think I will be changing out the aspen (I'm at the bottom of my super gigantic bag anyway), probably to coco coir, and go back to feeding all her meals in the bathtub. I feel like such a jerk that my laziness (just throwing her food in there instead of taking the time to move her) led to my animal getting injured.