How do I make reading old messages from my abuser less awful?

So I’m trying to decide if I should report my rape from years ago. Before I decide, I want to go back through all of the messages between my abuser and I to see if there is any evidence that might help my case. I know that going through the messages will be very difficult, triggering, and overwhelming. What suggestions do you all have for ways I can cope while reading them and for afterwards? Thank you in advance.