Thirteen Little Blue Envelopes & The Last Little Blue Envelope

Thirteen Little Blue Envelopes by Maureen Johnson 

Ginny's aunt, an artist, has died from cancer. She leaves $1000 for a plane ticket, four rules, and 13 little blue envelopes that she is to open each time she arrives at a new destination. Ginny's quest that takes her from her home in America, through London, Rome, Amsterdam, Paris, and all the way to Greece. Each person she is sent to meet along the way changes Ginny in some way. 

The Last Little Blue Envelope by Maureen Johnson

Ginny has to retrace some of her steps, re-connect with some old friends, make new ones, and learn the last lessons her Aunt Peg wanted her to learn.