Considering your LD coordinator was neutral to negative to taking on this professor based on the accommodation issue, I would proceed with extreme caution. You really might want to informally talk to some upperclassman, esp those with LD. They might have insight into your Uni and the possibilities and drawbacks of going higher with this.
See Uni profs are nothing like even college or community college ones. They are not employed to teach. They are there for research and publishing. It is bizarre but most unis could care less if undergrads are being taught well or really at all. Also, You might want to see if your prof is tenured. If she is, she is pretty much untouchable. I have heard of profs being heinous to students, but as tenured faculty they don't even need to show up for class regularly.
I agree you definitely deserve better. The Uni system may well not treat you like you deserve. Higher Ed systems can steamroll over undergrads. I again encourage to investigate what you are up against at your Uni before proceeding.