Stargirl - Season 3eps6 -

The episode's central conflict revolves around the "betrayals" of Courtney Whitmore and Cindy Burman:

Pat and Barbara go on a "recon mission" to the Mahkent home under the guise of a social visit to see if Cameron’s grandparents are a threat, resulting in a tense encounter. Stargirl - Season 3Eps6

'DC's Stargirl' Recap: Season 3, Episode 6 “Frenemies — Ch. 6 During the skirmish

Yolanda (Wildcat) discovers that Cindy (Shiv) has been hiding The Gambler’s laptop, leading to a brutal fight between them. During the skirmish, Courtney intervenes, but Cindy retaliates by exposing Courtney’s secret: she has been privately training Cameron Mahkent to use his ice powers. Stargirl - Season 3Eps6

Rick (Hourman) and Yolanda are devastated by Courtney’s lack of transparency, leading Courtney to tearfully step down and suggest Sylvester Pemberton (Starman) lead the JSA.