WIBTA if we let our daughter stay while we move overseas?

My husband and I have three children (16f, 5m, 3m) Recently, my husbands work asked him to move overseas to Korea for a new position. It's a great opportunity, and finding a new job in his field could take a while, so we're planning on moving in three months or so. The issue is our daughter.

We live in a pretty small town. Our daughter has known most of her friends since elementry school, and really doesn't want to go. She's really built a life here already, and I think the move would be traumatic for her. Her boyfriend and her have been dating for three years, and they've been friends since 1st grade.

She's never really been the stereotypical edgy rebellious teen, she's so empathetic and cooperative. But now she's claiming she won't learn the language, she won't make friends, she won't do well in school, and she'll be on a plane back the day she turns 18 in 14 months.

The thing that really sealed it for me was when I came home last week. She'd already told me her boyfriend was there, and when I got home they were both just holding eachother and sobbing. The thing is my in-laws live in town, and we spoke to them about having our daughter live with them when we move. They'd love to have a grandchild stay close to them, and were on board. Our daughter was all for the idea when we asked.

My parents found out however, and are claiming we're horrible parents for abandoning our daughter while we leave. I do see their point, I'm sure she'd miss us. It's just I'm not sure forcing her to move when she'll be an adult so soon will be good for her.