Simply put, Ashley outright didn't want to do it. With that understanding, Mary-Kate almost took the role just so Michelle could be a part of Fuller House, but, despite this, it boiled down to bad timing. She was eager to participate but reasoned that it wasn't going to fit in her schedule.

I can tell you that Mary-Kate and Ashley Olsen, who played the role of Michelle Tanner on the original series "Full House," did not reprise their role in the Netflix reboot "Fuller House" due to other commitments and their focus on their fashion careers.