That storyline was irritating, top to bottom. I was hoping they were setting Foster(?) up to be mistaken about the doping, which would have ramifications and show some character growth perhaps. Didn't like seeing her interrogate the mother and encourage the doctor to perform unauthorized tests. Then Brett backs down, after correctly telling her she was beyond their professional boundaries. Sure she was right, but still...
Also, definitely cool to storm the gym and arrest the coach in front of the children, yikes. They should have just had the girls handcuff him themselves and high-five each other.