Please help me understand this passage.

[YOSHITAKEHORI]

I cannot undestand the underlined sentence well.Can I understand that:
"She must have wanted to join the teenagers group. (But actually she didn't join them.)" ?
And what does "out of skin" mean?
Qot
So after loading up the car, she jumped in the back seat, put on her headphones and buried her head in a book. So much for those long conversations about her future that I had envisioned. "Here we go," I said, but she didn't hear a word from her nest in the back seat. Even when we stopped for lunch at Lake Havasu to see the London Bridge, she was quiet. I explained how the magnificent stone bridge that used to span London's Thames River had made its way to western Arizona, but her eyes were glued to a group of teenagers dancing and screaming. She would have walked right out of her skin just to be with them.Unqot

[Ouisch]

To "jump (or walk) out of your skin" is to be extremely enthusiastic or excited about something. You are correct that the young girl wanted to join that group of teens, but she didn't.

The young girl is going on a holiday with her dad, but like most kids her age, she'd rather be out dancing and partying with other teens her age, instead of visiting Arizona with her father.

[YOSHITAKEHORI]

Ouisch
Thank you very much again!