Glad you're OK...somewhat.
The bike doesn't look at all that bad, except you might get a kink in your neck sitting on that seat facing sideways!
I always ride slower when there's driveways and such, and I do also slow down while passing through intersections, too. I think locking it up at 15mph will allow you pretty good control, but any faster and you're dealing with possible issues.
I would definitely go after her if she doesn't replace everything, medical, bike, etc, and if she's sh-itty about the whole thing, well, there's plenty of ambulance-chasers in everyone's home town...they'll take this one without thinking twice, and I agree, beat them up on their cut too...they won't spend even 5 minutes in front of a judge, IF it even goes that far. Usually the insurance company will simply settle to make you go away and never come back.
IN the last 2 weeks, I have been noticing a LOT more scooters on the road, and I'm sure it's directly related to gas prices....this is a good thing, because more and more people will become aware, and hopefully better legislation will come out of this mess to protect the other forms of transportation like pedestrians are protected.
If you don't wear a helmet, WEAR A HELMET NOW! How much more proof do you all need? Accidents happen. Period.