I think a 41 year old lady should be about 140 to 185 lbs (pound)
I think that you should probably weigh 125-140
122-137 lbs
According ti international health standard, wight for a woman of 5 feet and 4 inches should be 56-60 kg or 124-132 lb with shoes.
Oh, come on guys.It depends on so many factors, but if she wants to truly look good in clothes, between 108-120