I have been to many rehabs when my son was around, and they all seemed respectful and effective. Sure they had rules and had to enforce consequences when they were broken, but that is a good lesson for those who always ducked the consequences for their actions.
Today I work at a rehab and find the same thing. Profanity is not allowed, by residents or staff. The people I work with there are experienced, qualified and quite good at counseling and keeping the place clean and peaceful.
No counselor should be yelling at you or anyone else. Yelling, to me, is a sign of being out of control.
I hope this helps. I don't know what is true at your daughter's rehab, but I will keep her in my prayers that she can stay on the good path.
Hugs