As for her matchmaking Jiang Xue and Liao Hui, she might not have genuinely wanted to change her daughter-in-law. She just wanted to use the opportunity to give you a sense of crisis, so you would value the husband's family and her a bit more.
She never had the chance to be in charge of anything in the Liao family her whole life, so inevitably, she had some thoughts when her son was getting married. You should not take it too personally—ruining your relationship with Liao Hui over this would not be worth it.
Listen to grandma—discuss with Liao Hui and see if he has any suitable jobs over there, to have you transferred. And, let him prepare the house in advance.
You might not even want to come back and live with your mother-in-law and her family after spending some time alone as a couple. Just think about it, when it's just the two of you, you can do whatever you want without worrying that someone might dislike it or feel uncomfortable, right?
