IG, I don't believe things will be "better" because you get married. This is only my opinion after being married for almost 2 years now. I think you will have lots of challenges to face, probably more than me, from what I read in your posts. If you don't like roller coaster rides, then it is time to re-think your situation.
Even if you get married and she comes to be with you, her family will always have great influence over her. A daughter is always very loyal to her family, especially her mother. As you can see most of us have similar experiences. Sometimes it can be difficult, but at the end of the day, we find we cannot live without our loving wife. I have found that keeping my wife busy( school, and the odd job) helps a lot. They can become really lonely fast if just left home while you are working. Since my wife has been to English school, she has really changed. She is very happy now that she has met some Chinese friends. Also the English has helped out in our own communication as well. I am very happy that I decided to take this path! Don't be afraid of the roller coaster rides, why do you think they have them? Because people like them!
Without out them, life would be boring!!!