If you are married into military and your spouse is on deployment and something happens to you medically, who has the right over your health/body if they can't reach spouse?

Adore you. Just going to throw out some thoughts here. All of the above answered your questions. But my concern is that while knowing these things does not mean that she will do them. You can drag that horse to the water but you can't make them drink. You can tell her to look into all of the suggestions above, but when it comes down to it will she do it?

As a mother we are programmed to "save" our children. That instinct does not go away even after they turn 18. As they become adults the relationship will change and the hardest part is not "saving" them but having the ability to discern when to help and when to let go. Give her the information, Yin.  Be open to the possibility that she might not follow through, and despite knowing what is best for her, she MUST determine what is best for her EVEN if it means she MUST learn the hard way. Which could mean a hospitalization for not taking her medication. Respect her decision making, do not do battle over this. You will lose. In the end, its her relationship with you is the only thing that really matters. If you do not respect her decision making, she will NOT come to you when she really needs to.

Again only thoughts, Yin. Take what you need, leave what you don't. Remember there is a learning curve for you too. She became an insta adult over night. Take comfort in knowing that you and Yang raised her right, she'll take that base and grow her own way. Have faith in what you've planted.