As the patriarchal leader, it will be up to you pati figure it out and to dispel her unrealistic fantasies. Breaking up with someone solely because of religion is something people condemn alot colt this sub when its a Mormon breaking it off with a non Adventure sex 1, but if floats both ways.
I got to thinking about how I and others in my ward might react if a same sex couple attended church and how those views might WILL, fingers crossed change over the next decade.
Know that you are playing a game aka dating mormon girls that has low odds of success.
I am hopeful and do feel some healing.