Hi Welcome to HCM
I have gone thru your your query and am glad to know showing interest in follwing regular exercise regime for elderly woman .
Regular Exercise is very essential along with healthy diet containing all essential nutrients as fiber ,
vitamins , minerals , supplements full of antioxidents , in natural form --fruit ,green veges , lemon , ginger ,garlic ,
aloe vera , turmeric powder etc,.
With all you are doing is fine and can include Yogic exercises from head to toe , like Pranayam - deep breathing , Kapalbhatti , Bhujangassan , Sarp assan , Vajjarasan all and more will strengthen your vital parts , give you resistance from diseases and assure healthy happy life ahead .
You can look for DVD of Baba Ram Dev,s
yoga . they are available all over the World .
It is suggested to consult a specialist for proper guidance .
Hope this helps solves your query .Take care .All the best .Get well soon
Don't hesitate to come back in case of any further query .