My Fiance wants a baby, but menopause has already begun?

She wants to be the next Mrs. and she wants to have a baby, but she can't get pregnant because the doctor said that her missed periods is a sign that she is starting menopause. She is 46 yrs old. She cries at night when I hold her in bed because she wants to have a child and waited too long. How do you comfort a woman who is going through something like this?