The round-robin event, which includes Australia, South Korea, Argentina, Canada and the Netherlands, will be a severe test and the final opportunity for Souyave to sort out her squad for the World Cup qualifier against Zimbabwe in Harare in August.
The young hopefuls have performed well with their attacking style, but the worrying factor is that the squad still lack a goalscorer and penetration in the circle.
"We get a good percentage of possession but we do not put the ball in the net often enough," Souyave said. The answer could be to give 17-year- old Lucilla Wright an all-out striking role.
The only two changes to the Champions' Trophy squad are the recall of Slough's Mandy Nicholls and Leicester's 19-year-old Carol Voss, who were unavailable for the Berlin tournament. England open their programme tomorrow against Canada and meet the Netherlands on Monday.
ENGLAND SQUAD: M Davies (capt), J Sixsmith (both Sutton Coldfield), K Brown, M Nicholls, J Smith, L Copeland (all Slough), K Bowden, P Miller, J Mould, C Voss (all Leicester), T Cullen, C Reid (both Hightown), D Marston- Smith (Clifton), J Empson (Canterbury), L Wright (Olton), H Rose (University of Massachusetts).