Was Shirley's decision to leave Laverne and Shirley mutual or unilateral?

Shirley's decision to leave Laverne and Shirley was not mutual. After eight seasons of playing the same characters on the show, Cindy Williams felt the need to move on and try something new. Desiring more creative control and to be able to star in a variety show of her own, Cindy left the show. Unfortunately, this left her co-star, Penny Marshall, without a partner in crime. Marshall was devastated by Williams' decision and had to go on without her.

The departure of Williams left Marshall feeling betrayed and abandoned. She was very hurt by Williams’ decision and felt that Williams had not considered the consequences of her actions or how it would affect Marshall’s career. Marshall was also angry that Williams had not discussed her plans with her first. This unilateral decision was a shock to everyone involved, especially to Marshall.

Ultimately, Shirley's decision to leave Laverne and Shirley was a unilateral one. Cindy Williams had her own reasons for leaving, but this decision had a huge impact on her co-star and friend, Penny Marshall. Marshall was heartbroken and felt betrayed by Williams’ decision, which was made without consulting her. Williams had the right to pursue her career goals, but it came at the expense of the friendship between the two actresses.