GRB has 50 points
Westlund has 47 points but can drop 8 here so 39 points
Ruivivar has 44 points but can drop 12 here so 32 points
Tsivets has 30 points
Brassart has 25 points
Point totals to give out are: 30, 25, 20, 18, 16 as the other 3 are not eligible for points.
GRB is qualified to Paris even if she finishes with 16 points because she would have 66 points. The only one that could pass her would be Westlund.
Brassart is eliminated at 25 points because even with 30 (55) it won't be enough as Westlund will pass her if she gets 16 points, giving her 55 points. Westlund would win the tie breaker automatically.
Tsivets and Ruivivar both need to win and get 30 points for 60 total and hope that Westlund doesn't get 25 points for a total of 64. So Tsivets and Ruivivar need to place 1st and Westlund can't finish higher than 3rd for points in order to advance.
Westlund just needs to finish with 30 points or 25 points to secure. She can still advance with 20 points but depends on who got 1st and 2nd in the rankings. If GRB wins 30 points and Westlund gets 20 points, Westlund will secure the invite.
So really 3 going for the last spot: Westliund, Ruivivar, and Tsivets with Westlund the mathematical favorite to advance.