If that woman suffers from pulmonary arterial hypertension, and has been prescribed it by a doctor, then yes.
As sildenafil citrate (the drug whose brand kamagra name is Viagra and several others) was initially developed for treatment of hypertension and angina, it was only discovered in testing that a resultant side effect was erection in males, and Phizer (the developing company) decided to market it for erectile dysfunction.