In asking this question Depowering a high AC PC without killing the rest of the group I realized that one of the problems of my setting is, that characters are not playing up to their full potential. This is especially problematic with the player of the bard character.
We are playing pathfinder, and all of my players are new to pathfinder and still learning. The Player of the bard character chose, for whatever reason, to play the Sandman archetyp (http://www.d20pfsrd.com/classes/core-classes/bard/archetypes/paizo---bard-archetypes/sandman) . So instead of the typical buffs a regular bard applies to the group, she gets a lot of sneaky stuff added. Unfortunately, she fails to apply them. Most of the time, she just fights with her slingshot or her shortsword, no really making an impact with BAB 0. So far she has used her bard skills just once or twice.
Even if I am lowballing her some field, where a bard can shine and no fight is involved, she kinda misses it. For example, they were trying to gather information about the whereabouts of a cult. I told her, that while strolling the market, she sees a bunch of circus-people performing and playing instruments. She just said "how nice" and watched until the other PCs encouraged her to TALK to those people and join them.
I already talked to her if she wants to try another class if the Sandman feels overly complicated to her. But she told me, she now invested a lot if time in learning the spells and abilities and wants to keep him.
Its frustrating both of us. I have no character-edges I can work with as a GM and she feels that her character just isn't as awesome and can't really do anything in comparison to a fortress-like knight, a crazy alchemist with a burning passion for beer-brewing and a pyromaniac sorcerer.
Can I help her somehow? Or do I just have to accept, that some people are just not as creative and leave this to my players? ( I already suggested to them that they help her).