I can't see how she could cause them any trouble with it, unless we're talking something like Rachel and Renee whitnessing Julie being assaulted, and they're both going straight with screaming that they're going to tell cops and Renee's dad. Only something like that could work as serious threat. Cause two sets of parents (Julie's and Renee's) believing their kids + Rachel being older, confirming their story... Then yeah, that may potentially lead to some jail time. Cause with Julie being so young they may not bend to any sort of threat or blackmail to keep their mouth shut or being tricked into believing that they won't be believed.
With the dancers... if that was true that DA was indeed bringing these dancers there for that reason (sounds bizarre to me, not only with obvious reasons but also with some doubts about logistics that I have), if they were going there willingly, why would they testify? That would likely cause them more trouble than CA. Even if somehow forced to have sex with him or getting literally tricked to get there and assaulted, it would still harm them more than CA.
With that story about Rachel getting inappropriate with CJG CA had leverage over Rachel, huge one, if Renee's dad would confirm it, then any claim from Rachel would be dismissed.
Don't forget that local LE had multiple murdered young women being dropped all around Forth Worth, with Carla Walker's case being HUGE at the time. They got raped and beaten up woman showing up, reporting it, telling them about attempted murder and her rapist bragging about murdering two women recently and dumping them near Benbrook - and saying that she saw him, that she's willing to testify, and try to identify him.
Yet they did nothing about it, they werent interested. If that was the reality then people living it had to be somewhat aware.
So how could both (Rachel and CA) end up confident that sexual assault allegations would matter?