it depends on what she's using it for, how tall she is, and her experience level. if she's beginning and average height i'd say a 100/125/150 4 stroke would do the trick.
no make
There are many but i would suggest the Honda CRF70F, the best of its kind
Get a KTM
u can noramlly find out by looking at the vin # then searching it on a dirt bike site.
they make oil to petrol thats why the is dirt
ask them
What kind of an idiot are you? That seriously depends on what kind of freaking bike you have, STUPID!
Wawa unleaded.
Green my friend
4 stroke
Best to use two stroke oil. Mix it with the petrol, (I guess you know this)
yZ 450cc with a pro tapper pickin pocker is exhausht is what i started with in i was 13. i now ride a Kx 993cc its a bad bike and it flies.