Shelly, aged 15, sells a car to Fiona, aged 25. Fiona in turn sells the car to Raphael. Under section 2-403 of the Uniform Commercial Code, if Shelly chooses to disaffirm the contract with Fiona:

Shelly can get the car back from Raphael.

Raphael will have to sell it back to Shelly.

Shelly can do so, since she is a minor.

Shelly needs to file a breach of contract against both Fiona and Raphael.