I can't find a good middle ground. You guys would either tell me I'm being beta and letting her walk all over me or tell me I'm beta for caring too much.

Let's say your at with a girl at a bar and she's doing something disrespectful. Or a fwb is being disrespectful in a fwb relationship. How would you handle these situations? Are there any good posts about asserting boundaries and how to handle disrespect?