So I'm in the same position, but the other side of the coin. I'm 55, going through the menopause. I'm tired, I've put on weight, I have no self confidence, and hate how I look. I'm self employed therefore I work so hard, plus we've got a 13 year old son and I have an elderly mother.
I do most of the housework and cooking, and running around...so yes....sex is not on the forefront of my mind, which is a major issue for my partner.
I don't want to be groped like a prized chicken when I take my bra off at the end of the day...but I would like some understanding, a bit of romance and to be told I'm loved.... sex for women is from the brain not the groin... how can I feel sexy or want to swing from the light fittings when I'm bloody knackered, feeling unloved and scared that he'll take one look at my once gym honed body and say 'nah...your alright !!!" (Or be worried I'll actually break the light fitting and bring the ceiling down in the process)
Sorry a long ramble, but what I'm trying to say is tell her you love her...spoil her....Compliment her...tell her how gorgeous she is...but not whilst groping her tit .....do the laundry...tell her to put her feet up...simple gestures mean soooo much.
I'm sure you're doing this already....but if not...think about how the last few years have affected her as a woman....men don't have to go through the menopause or hysterectomy, so its difficult how to describe how this effects us..but it really does.
Good luck.....And wish me the same in return !!!!!