I disagree with you. Your body will find its path in the way. Because your mind is guiding accordingly. I mark your words like-’ adult daughters, sixty years old grandmother, shortly going to retire,” are clear indication that you have convinced your mind to believe- “ you are old and used.”
It is very strange for a believer in Yoga, Ayurveda and Indian Philosophy. For Yogis 100 year is an average age. Nature has given power to man to reverse stages of life. You can feel like 30 years old at 60. Make your mind believe that you are 30 years old mature youthful lady full of passion and romance, your body will surely respond to bloom you better than when you were actually at 30. Because you have done with rearing and caring. You have more time and energy to focus on yourself. I have three years to go to make me 60. I am constantly reminding myself reaching 30 not 60. Wish you youthful body and mind both.