@wildthingI come from a family of nurses. Oddly enough many of the girlies I grew up with bacame nurses as well. One in particular was that type of person that could barely read or write in high school! now she is a nurse! She found a way to overcome those deficincies and believe me she had to do some work, but she did it! As you probably know, colleges have many tools available for those who are a bit weak in their English/writing skills. These include writing labs and tutors who help students with their papers. The help is there and these people want one to succeed. The biggest obstacle is self motivation. A common trait all professionals must have to succeed. Keep gently supporting her and perhaps research and then show her the help available to her once she takes the plunge. Perhaps she can start slow by taking just the proverbial English 101/102 classes by themselves. This way she can focus on strengthing those skills and have plenty of time to seek help when needed thus building her confidence! Good luck to her. I know nursing is an incredibily rewarding carrer. It is something I have witnessed my whole life. It is worth the effort!
BTW congrats on your soon to be MBA as well!