will19, it does sound like your sister is guilt-tripping you to move back home for her own reasons (hidden agenda, perhaps, but only you could know that for sure).

Listen to your gut. Your gut knows it would be a huge mistake if you moved back, because it would be to your sister's benefit -- not yours. Plus, she has two incomes, you don't. So, you would take a financial hit plus the emotional/psychological hit were you to move back to your childhood town that made you miserable growing up. Why move back to your past, literally?

Stay strong. Say no. Give your sister this boundary: if she wants to see you so badly, she can make it a family vacation to fly to your city, stay in a hotel and visit with you. Otherwise, your answer is no. She already knows why you don't want to visit. You don't need to tell her. She grew up with you so she definitely knows what you went through and what motivated you to leave your hometown. For her to act surprised or argue with you, would be disingenuous of her.

And, one thing I've learned (I'm still learning a lot) is that I don't owe anyone an explanation for my decisions. I'm 49. All I need to say is "no." If the person doesn't like my answer and pushes me for an explanation, I am not obligated to give them one per my boundaries. So, you don't owe your sister an explanation. It's your life. She is not in control of your life -- you are in control of your life. Don't play into her power tripping you. Don't let her guilt-trip you. Stay where you are. She can bring her family to visit you. If she won't, her loss.