Hi Mudit, Welcome to HealthcareMagic Forum.
Is she Diabetic or Hypertensive? She may be having Gum Sensitivity, you should get her examined by a Orthodontist, so that he can examine her thoroughly and Prescribe medications. Since she is having Bad Oral Breath, which is called Halitosis
, she is not taking good care of her artificial teeth and also her oral hygiene
. Kindly take her to the Orthodontist at the earliest.