I would say that maybe you need to calibrate your computer monitor to the F2100 printer.
I am a Mac guy and my prints looked pretty true in the color department right off the bat so I haven't had to do this. Even my Win7 PC prints true on the Epson but not all monitors are created equal.
The other thing you can do if you are in a pinch is adjust your colors in PS and print 4" X 4" art on a shirt in different locations until you hit you desired pink then print away.
I am a Mac guy and my prints looked pretty true in the color department right off the bat so I haven't had to do this. Even my Win7 PC prints true on the Epson but not all monitors are created equal.
The other thing you can do if you are in a pinch is adjust your colors in PS and print 4" X 4" art on a shirt in different locations until you hit you desired pink then print away.