I hope you didn't dry it in high heat. That would really set the stains and make them harder to get out.
But I'm sure someone on this board can come up with something.
I get blood stains out with peroxide, and sometimes with plain cold water and soap. Or sometimes simply with meat tenderizer..do they still have stuff like this? Then there's Oxyclean, and sometimes just plain old bleach, unless the label says not to use it.
After you try whatever others suggest and should there be some stains left, (NO HOT WATER OR HEAT) then I'd suggest you take it to the dry cleaner.
Make DD pay for her next shirt, I found through experience that it got through my hard headed kids' wallets to their brains. Much faster than my talking to them in loud tones.