Complex sentence: Nell receives a letter from Yale informing her that she has been accepted, meaning that her interview (done by Woody in her body) was successful; however, she is still upset with Woody and has decided not to go to the Homecoming Dance.
Split into simpler sentences: Nell receives a letter from Yale informing her that she has been accepted to Yale, meaning that her interview (done by Woody in her body) was successful. However, she is still upset with Woody and has decided not to go to the Homecoming Dance.