Well, no. She felt comfortable with naming Nora in court repeatedly as a point of his infidelity, but yeah. "Legally" they did not have sex because they never met up until Malena was long gone.
Cruelty, however, was blatantly demonstrated on his stream daily. Even with Nick being able to "defend" himself by bringing his own clips as a rebuttal, does she not have a surplus of proof of him being needlessly cruel to her on purpose for "content"? That's not even unpacking obvious bag full of evidence called "Text messages".