I'd say the Blue Cat was almost more than expected. Honestly, what kind of powerhouse would you expect the runaway idiot son of a noble to be able to hire? He probably wouldn't have been able to get even one of the Blue Cat's calibre if the target wasn't a Black Cat. You need either an uncaring mercenary or a real villain for a random, unjustified act of revenge. With the noble's lack of skills, he couldn't have anymore tricked anyone either. Most villains would just rob the idiot or hold him for ransom. Any truly powerful villain wouldn't bother to listen to him. Hiring a powerful mercery could have already been unattainable for the idiot.

I find Amanda quite amusing and her actions understandable: anyone would be charmed by Fran. That being said, if we had multiple episodes of Amanda stalking Fran, things would turn annoying. But they are already going to raid a dungeon.