Is this a sign of menopause?

Summer

So my mother... age 43... started her period like 2 days ago and it is realllly bad. She said that she has clots like no tomorrow and her period is so heavy that she went through a whole box of supers in a day. Today she was so nauseous and had horrible cramps that she took a bath and put a heating pad on and took medicine. I’m just wondering if this is a sign of menopause and when she should expect the end of her cycle days. Anything can help!