Meryl Streep, a Hollywood heavy hitter, has the resume to pick and choose her roles, and she is known for liking to take on fresh and challenging parts. That's likely why the part of Donna Sheridan in Mamma Mia! spoke to her, as playing a mother with a complicated past who occasionally broke out in song isn't something that comes around every day. However, sequels are more complicated (as in the case of Downton Abbey: A New Era) because Streep isn't as passionate about them. So, let's dive into why Meryl Streep didn't fully return in Mamma Mia! Here We Go Again.
Source：https://www.cbr.com/why-meryl-streep-didnt-fully-return-mamma-mia-2/
