Hey, a Canadian female here who has played hockey in Suisse Romande.
As Chemmie said, you'll find that school and sport are separate here, so don't worry too much about finding a school with a team. There are a bunch of women's teams in the Geneva area that are part of the Swiss National Hockey League, hopefully you can find one that is close to where you live. Once you know where you'll be living, please do get in touch with me.
At age 14, given that your daughter has had North American training she'd probably be more than ready to play in a women's league. I've played with 15 & 16 year olds here and it was no problem, the team atmosphere was welcoming for young people (i.e. not a lot of booze, everyone very polite and respectful). However, French is without a doubt THE language. Some people might speak some English, but it's not a given. Also, you'll find that just about everyone supports the Montreal Canadiens. For me this is normal, but seeing as you are from the US it might take some getting used to.