I became more extroverted. More social, more outgoing. Being able to be myself is delightful, and my old quiet bookish persona doesn't fit me anymore.
I would expect significant change to be normal, mostly expressing ourselves in ways that didn't feel right before or ways werl didn't allow ourselves to in the past.
Damn I'm sorry. The only thing I can suggest is to give her space, as much as you can. You don't deserve this.
If you have any kind of support system outside of her, now is the time. I would stay off Facebook. Trying to do damage control there with a conservative family is probably going to do more harm than good.
It's going to hurt more before it gets better, but with time and some effort, it can get better. Care for the kids as best you can. Then care for yourself as best you can. Then care for your wife.
You have every chance of being a pretty woman. It make take hormones and time and hair removal, and maybe some makeup magic, but there will probably come a day when you can be proud of what you see in the mirror.
Regardless, who you see in the mirror is more important. Do your best, and the rest will fall as it may.