Dear patient Swelling of hand and forearm occurs after every fracture of forearm bones and persists for 3 to 4 days in normal cases if treated properly. If she is waiting for surgery due to diabetes following should be done 1. Above elbow slab should be given to splint the fracture 2. Forearm should be kept elevated on saline stand 3. Fingers should be moved actively 4. Medication like chymoral forte needs to be taken for 5 days initially. If all this things are not followed swelling persists. Onother reason may be tight slab application as it hampers venous drainage. So please check all this things and follow this properly swelling will reduce in few days. All the best.