This is really not fun at all. She is not a quirky dumb girl, she is someone with either development issues or mental problems who needs professional help, not just to be enabled and spoiled like a big baby.
Her stupidity is extremely frustrating and the fact that her friends just play along so she won't start whining is even worse.
Like, look at this fucking chapter. Dude was sick and yet had to run himself ragged dealing with her dumb crap while the other friend only tried to stop her tantrums and did little else.