Hi.. Thanks for the query.. It seems that your female friend, aged 68 is suffering from Recurring Apthous Stomatitis or Recurring Apthous Ulcers.. It can be caused due to a number of reasons like Stress, Nutritional Deficiency [Iron, Vitamin B12 and Folic acid] , hormonal changes, acid reflux, tongue trauma due to some sharp teeth or tongue biting habit, excessive intake of sour and citrus foods, uncontrolled diabetes and other immunocompromised conditions etc.. She need to consult an Oral Physician or a general dentist in this regard to get evaluated and treated.. For apthous ulcers she can do warm saline gargles Gargles with 1:1 solution of benadryl and milk of magnesia can help.. Apply numbing gel over the sore for relief from pain especially during eating.. Take Vitamin B complex and lysine supplemenst for about a month.. Avoid spicy, sour and acidic foods.. In case if still the condition does not subside the physician can prescribe you to take a Steroid course as it it the ultimate treatment in case if nothing else works.. Hope this helps. Regards.. Dr.Honey Arora, Dentist.