Interfaith marriage is but one variety of the learning experience. Don't wait for it to eventually fall apart or hope that she will change.
I look forward to reading more. I'd suggest taking issue with things that specifically bug you the most.
For men, this will likely come after completing your mission trip, so in your early 20s at the earliest.
But that parent-child relationship was bound to change anyways as you become an adult. You should ask Him what you should do, as no one else can see the end from the beginning and no one else has perfect love for you and for your potential husband.