My second visit to the physical therapist

I missed my scheduled 'second visit' last week (mis-read the time) so today was my second visit. My measured flex of my leg was 120 degrees and zero straight. My therapist says I don't need to do my stretching/flex exercise for now since I've already reached the one month goal. I'm not sure if this is because it could be dangerous, or she wants my therapy to be drawn out longer? I'm just going to proceed as I have been doing because I seem to be doing well and see no reason to slow down my progression. I've been leaving my brace off at night/bed and my leg has been feeling much better. I still walk around with the brace, most of the time locked.