shoulder injuries

My daughter swims for USS Swim Club in Ohio. SHe has been dealing with a Rhomboid strain in her shoulder for almost a year now. This injury mostly occures when swimming butterfly. However repetitive motions for a prolonged period also seem to irritate the shoulder. I am looking for advice because the problem seems to stem from Swimming butterfly. Long Course season started and she was doing very well - no shoulder pain until they swam fly in the last practice. My questions are as follows: 1.) Is there a way that she can train and continue to provide additional strength with butterfly? Or is it best to just not deal with the butterfly until the shoulder is in better condition and closer to full recovery? 2.) What would be the best training method for a swimmer with shoulder injury? 3.) Is more laps always better training? Can she achieve the same benefit or better training by swimming less laps with a specific purpose during practice? Coaching advice is welcome and appreciated - as I am concerned for her welfare. She has very high goals and I would like to help her achieve her goals without injury. Thank you!