Sure is hard giving up our vices, mine is mango green tea (30grams of sugar )

TS unfortunately has limited my Sister's ability to have children as she doesn't have any eggs and from all the medication she only has one kidney left and her liver isn't working to it's optimum. So even if I donate an egg to her, carrying a baby could be rather difficult and life threatening for herself and the baby
Yes, sadly TS affects their ability to have children of their own - I am sorry to hear that your sister isn't doing too well in other aspects