Complex sentence: Many signed her guest book which, would accumulate over 4,000 signatures in a summer, and she began averaging between 6,000 and 7,000 guests per year, often over 100 in a day.
Split into simpler sentences: Many signed her guest book which, would accumulate over 4,000 signatures in a summer. She began averaging between 6,000 and 7,000 guests per year, often over 100 in a day.