Question

Why joymati was called sati

Answer 1

She was accorded the honorific Soti or Sati on account of her heroic endurance of torture until the end, dying at the hands of royalists under Sulikphaa Loraa Roja without disclosing her exiled husband Prince Gadapani's whereabouts, thereby enabling her husband to rise in revolt and assume kingship. 

Answer 2

hello my dear
here is your answer


because she endured torture and died at the hand of royalists under sulikhphaa ( loraa roja )
which enabled her husband to rise in revolt and become the king himself .

hope it will be helpful to you