You'll want to re-post this over on the Europe forum. Not only is that the appropriate board -- a LOT more people will see your questions over there.

have done it a lot when I was young

recently advised my son similarly.

backpackeurope.com

hostelbookers.com

Avoid train pass always a rip off and busabout also a rip off

Train like a local point to point seat61.com or if

going all over www.eurolines.com youth bus pass makes

sense from 10 euro/da sometimes.

eurocheapo.com great budget tips lots of times with 4

cheap hotels shared baths work out way cheaper and

better than hostels.

kayak.com/buzz get cracking on booking flights

that will be her biggest expense.

Happy Planning!

for lodging budget food everywhere

35 eu in the south and 50 eu in the north

pppd works well for most these days

exclusive of transport.

My son made it fine all over recently with friends

for under 35 euro per day.

I'd still re-post over on Europe