Welcome to HCM,
Your mother is diabetic and taking regular treatment which is good she had UTI in diabetic they are relatively more common but she was treated with appropriate antibiotics,
If she has lost 14 kg weight which is excessive , Sudden weight loss
is not good it should be gradual but what is the reason for this needs to be found out with meticulous examination and required investigations.
If she is following crash diet then it is possible and her Hemoglobin
is also low from previous level, which could be due to nutritional deficiency
or blood loss from body, another possibility is development of Kidney failure,or any systemic disease or complication.
She should be investigated by CDBC,FBS,PPBS,Blood Urea, Serum creatinine
,Urine,Stool R&M, Abdominal Ultrasonography
, an X ray chest.
If everything is fine then balanced diabetic diet and supplementation of Iron,and vitamin will restore her health.
Further action depends on result of tests.
Please take care