I'm going to try to dictate my housemates appliance usage
Why do you think that's necessary?
I have always been annoyed by her using the blender so late at night
That sounds so annoying!  I'm sorry she's not being respectful.  People shouldn't excessively use loud appliances when others are trying to sleep, and it's okay to be upset about it!
I'm going to get on her case.
It's better to talk with her in a calm manner. Getting into an argument will lead to resentment and she may even use the appliances late at night out of spite.