It's easy for me to tell someone else to be honest with their pdoc/t, but I'm terrible at it myself. I'm the queen of bringing stuff up but dancing around the main issue or giving details, especially when I think there's a possibility the details will land me inpatient. I'd probably say something like, "A few weeks ago, I had an episode where I was worried someone was going to hurt me." That way she knows there was an instance of paranoia, but you leave out the part about the knife. I do stuff like this with my T all the time, which is why I'm sitting on my couch typing this instead of somewhere inpatient right now. Hope things work out for you!