i didn't get a good picture of opal. i'm not used to night walks now. it was good anyway, though i was thinking how opal doesn't check in like charlie does. then at the end we met charlie and opal wanted to say hi, and we thought maybe it will be fine, and suddenly charlie got mean and it was a bad scene. maybe off leash she would be ok. i know a. is nervous, and charlie picks up on her vibration. after, i said to opal, why can't we just be gentle with each other? it would be so much better! 

charlie's early trauma with a pair of yappers on the elevator left a residual fear that she generalized to the whole dog community of the building, and that fear makes her defensive and aggressive. out in the world she's happy and good.