Your mother is in peri-menopausal age. And in this stage the estrogen hormones on the women are on decline and this is major cause of urinary problems in women above 50 If she is getting tired at walking 200 m it could also mean her heart needs evaluation as dyspnea is a sign of cardio respiratory problems. So it would be best to get her evaluated by a gynecologist and physician. Urine examination can reveal infection, and a ultrasound should be done to find out problems with urinary system like stones, infection, etc sometimes due to laxity of the tissues after menopause, or in perimenopause, the urinary bladder sags , and the pelvic floor undergoes looseing and this may result in incontinence, due to low tone of the urinary bladder sphincter. This can be helped with medicines, kegel exercises and hormone replacement therapy

Hello.... Sir I understand your concern towards your mother's health, I think you should know that there are many reasons which can lead to this problem like stone impacted in the urinary tract/ bladder, recurrent urinary tract infection causing the muscular tube to be narrowed, automatic bladder where there will be frequent contraction of bladder on regular interval leading to increased frequency of urination, certain medications can also cause yhis symptom as one of its side effects. So I suggest you to kindly consult a urologist to know about the cause behind it, treating the cause is really important in management of this condition.