Should i confront her?

Well i had an issue lately with my mil. Basically i heard things she said about me to my husband. So my husband disagree with my mil too about the things she said about me. Cause it wasnt true in the 1st place. But she still feels that shes right. Its been 3 weeks things happened, still shes stubborn. Should i just confront her instead? And just let out the things i wanted to say to her? Or just let her be? Till she apologise to me? Any suggestions? ?