Complex sentence: While their relationship is forming, a new boy in the town appears, Joe Fountaine, a half French, musically-talented, goregous, and positive friend who helps Lennie almost forget about her sister's death.
Split into simpler sentences: While their relationship is forming, a new boy in the town appears, Joe Fountaine. A half French, musically-talented, goregous, and positive friend to help Lennie almost forget about her sister's death.