Given her fighting style that may or may not have been displayed during her fight with Titanus, spectators may have expected Sarada to charge in and engage Samson in hand to hand. Samson himself may have been expecting much the same.
Knowing - or rather anticipating - this, Sarada changed her approach. Instead of immediately engage him close quarters, she instead launched a barrage of energy blasts to get Balon moving and to establish her range advantage.