No, you dont see him again.
no
You can catch Reshiram only in Pokemon Black, when you are about to have a battle with N in the Pokemon League.
if you mean if you lose just talk to him again or her but if you win and you want to battle again you cant
I believe she goes to Nuvema Town, that's where you can battle her
sorry but no
you can battle kyruem twice. if you fail to get him the first time, you can battle him again.
Yes in Pokemon White after you defeat the last member of the elite four you are forced to battle Zekrom. You battle Reshiram if you have Pokemon Black.
The Champion in Pokemon Black and White is only after you have defeated N and Ghetsis For the final time. Then the second time you battle the Elite Four/Pokemon League, You will battle Champion Alder. All his Pokemon are Lv 75.
Sorry, but N disappears after you battle him and Ghestis in the Pokemon League.
wifi battles battle subway dress up do elite four again link battle (if fiends have pokemon black or white)
you have to have Pokemon white but if you have black you need to trade from someone with white. you need to have completed the Pokemon league then you catch zecrom then you battle N who has Reshiram then when you defeat him you have to battle ghetsis.
it depends what level they are. if its not strong enough to battle, give it exp share and go to the league to battle with a stronger pokemon. or if its level is 30 - 40, battle at route 7 where it looks like this