Visit the Jo Malone website for an education on their fragrances.
You'll see (at the bottom of each fragrance's product description) a list of other JM products which can be layered with each product (i.e., Orange Blossom can be layered with Wild Fig & Cassis).
Then, go to ebay and buy affordable decants of an array of JM scents you think your daughter might like. This will get her started on perceiving which notes she likes and how fragrances are built up by combining notes. She will get the added benefit of wearing scents that are different from all of her girlfriends who shop at department stores.
The offerings in the fragrance marketplace can be overwhelming. Buying products by hit and miss can be costly, time-consuming, and may even squash an interest before it has a chance to start if one invests in a couple big bottles that wear out their welcome.
Bless your little cottons socks for being such a thoughtful mom. That daughter is very fortunate!