I totally agree with everything you guys said.
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there are some posts on asianfanatics that pretty much diss TY and MC, saying that they are annoyed with TY for confessing to MC. But for, I thought that part was really sweet and I actually teared up. I'm was a bit annoyed at how TY seemed to not care that CX left, but it was revealed that she ran away many times before. So it's understandable that he probably thinks it's just another one of those time.
I think MC did indeed suffered more than GX. Like you guys said, it's note easy raising a child alone. Some people said that MC is too weak of a character, but I have to disagree. I think she is really strong to continue living and to raise XL by herself without asking from help from others (though TY helped without her consent). She may not be those characters who fight back since she is too unselfish, but she's not a pushover either. During those few confrontation with GX's mom before the surgery, MC did speak back. She didn't yelled, but spoke calmly which I believe is harder to do. She keeps her feelings to herself and suffers by herself.