Nichole, you need to stay very slow as you go down that steep hill if you have a turn during the hill. Start slowing down WAY before your turn. Do not let your bike pick up a lot of speed on the downhill. And naturally, don't slam on your brakes! Think of the whole hill as part of the turn process.
And of course- don't EVER depend on drivers "knowing" that you always turn there. All it takes to kill you is just one clueless driver barreling along that street which is unfamiliar to them and not paying attention.
Never do anything in a way that makes you feel unsafe.