Toy snake proves to be dangerous

So Princess is sitting on the couch watching TV even though I've hollered twice now that it's time to get ready for bed. I'm on the computer at the moment so the kids know they won't get an immediate reaction to their ignoring me. Grrrr.. Then all of a sudden I hear this piercing, blood-curdling scream! I bolt through the door to find her having a complete come-apart. She's screaming and shaking and I'm in a complete panic. I finally get out of her that she's popped herself in the face with a rubbery toy snake. After some time, I get her eyes open and see that it's the left eye that's taken the brunt of the attack. It is red, blood shot, and glassy.
It is determined eventually that she's okay. I give her some Motrin and get her laying down in bed with a cold washcloth covering her eyes. The firefighter gets home from karate and checks her all out adding an icepack to the treatment. I tell her if it's not better in the morning then we'll go see the doctor.
Ten minutes before her hair appointment I am at my witts' end. She won't get up! She's crying and covering her eyes and it's still pretty red. It's obvious that she has some popped blood vessels, but I just don't think it should be hurting this bad so I call the doctor. We are advised to see an eye doctor immediately and call them back if we can't get in soon. After waiting for an hour, the eye doctor confirms the need for the appointment. He says it's a really good thing I brought her in because it doesn't look good. He dialates her eyes and we wait another 30 minutes. He then looks at the eye with the microscope thingy and says

there is significant swelling in the retina that he fears will lead to a detached retina in the left eye.

Swallowing back that fear I ask as many questions as I can think of and am told there's really no treatment. We have to go back in a week to be sure that hasn't happened. He spoke very seriously with her telling her if she feels sudden pain or can't see or it seems like a curtain is covering part of her eye she needs to let me know right away so I can rush her in. A detached retina would require us to take her to the city for some sort of surgery. In the meantime she should "avoid strenuous activities but should be allowed to have fun & be a kid."
I can't believe this happened. Apparently she was pulling the snake back with her foot and holding the head & tail in her hands like you would stretch a rubber band. She kept telling me that she wishes this happened to Sponge Bob and not her. (They watched an episode the other day where he gave himself a black eye trying to open toothpaste or something.. I hate that show.) She asked if she's going to have her first black eye ever. She doesn't realize it's worse than a black eye! The stupid thing actually hit her eyeball! The eye doctor said "it sure tattooed her eye good" whatever that means! She insisted on going to dance this afternoon, but I stayed the whole time to keep an eye on her. She did fine except when they were stretching down to touch their toes. I think the being upside down part must've hurt. Poor thing. Why do the craziest things happen to kids?