STEP MOM NEEDS URGENT HELP!!!

I dont even know where to fucking start this. I'm internally freaking out as I'm typing this and shaking uncontrollably. My step daughter came to me this morning after looking through her photos, and on her screen was her mother's nude photos. So, of course I INSTANTLY grabbed her phone and my step sons phones away because I didnt want them to see anything else. I started scrolling through the photos and found MULTIPLE photos of their mother naked on BOTH of their phones. They're the same images on both of the phones so I think it might have been from their mom syncing her email to their phones.

What do I do? Shes been searching and watching porn on my step sons phone, looking up how long drugs stay in your system (shes on drug court probation), and has been doing vile things right under our noses. I cant believe I didnt find this shit earlier. I'm so lost about what I should do. Should we sit down and discuss custody arraignments with a lawyer or do I just let this go? I tried googling state laws in florida for this, but as you could probably guess, i came up totally empty handed. I need advice and a damn chill pill because this momma is about to lose her mind!!!