Nathalie's score is 4 + 3 = <<4+3=7>>7.
And the total points of Nathalie and Lizzie when combined is 7+4= <<7+4=11>>11.
So, the total score of Aimee is 11 x 2 = <<11*2=22>>22.
Lizzie, Nathalie, and Aimee's total score is 22 + 11 = <<22+11=33>>33.
Therefore, their teammates were able to score 50 - 33 = <<50-33=17>>17.
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