Blue damsel still stressed??

Im starting to get concerned about my blue damsel. She was introduced into my tank along with the striped, and domino damsels about 3 days ago. My water has been perfect for the past 4 months, and I decided to bring some fish into my underwater world. The striped and domino fish are eating very steadily, swimming around, not breathing heavy, and seem very content. From day one however, the blue appeared to be breathing very fast, and wouldnt eat, and would usually swim in the same spot and not leave. Now for 24 hrs plus, she has been hiding in a cave under some live rock, not coming out. I can see her, she's still alive and all, but Im starting to wonder if she will ever get over the stress and eat....Any ideas? She has very good color, no damaged fins ect...

 

LOL yes well Its most likely getting the fish food beat out of it a 3 stripe and more importantly the Domino are seriously mean and aggressive fish they just showed the blue one it place in the pecking order . Three Damsals in the tank that size one or the other will have to loose .