Funny.
I just changed parishes over that very issue. The director of music (it was a huge parish) loved the Glory and Praise "hymnal."
I sent her an email saying that we had 2000 years of Catholic tradition that was being ignored in her choices of music - some of which was borderline espousing the doctrines of Mormonism (OK for Mormons, bad for Catholics).
She responded that she wouldn't change - and, within weeks, began using mod-music written by HER HUSBAND(!) at Mass.
1) At least she has a husband (and not a 'wife').
2) If her husband were a competent composer, this would not be a problem ... Something tells me that this is not the case ...