How can you tell if upper transmission line/seal is broken/needs replacing? on 2003 Honda Odyssey

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Driving on the highway I heard funny high pitched whine and stopped at a rest stop to check. I noticed red fluid that I think is transmission fluid splashed on firewall, under wheel well and pooled slightly on engine. Transmission fluid checked and is still marking full. My friend said maybe it was a hose. Car is not slipping in any gears. I am 200 miles from home and he advised drive carefully till he can check it out. Dealer wanted 100 diagnostic fee:(
(1) Answer
Just because the dealer sells the car doesn't mean they are the only ones that can fix or diagnose the problem. Use this website to find another option to have it checked out. I would do it as soon as possible.