While you will be of the right age to date, the Church discourages you from trying to date someone while on your mission trip. This helps us out a lot, we dont feel like we are missing parts of each others day and I dont keep him up all night talking. Make sure she knows the plan, so you both can dress appropriately. And after years of this struggle, will your love for him and desire to avoid the hassle cause you to reduce your activation.
Hopefully this helped a little bit. Life is a journey and going through it with a true partner, and a mutual respect for curiosity, is so far greatly rewarding. I would love any advice you can give. I have been looking for a support group on facebook but couldn't find one so I have created one. What you are potentially choosing is certainly not the easiest path.
My husband is in his last year of residency. This can be done. I am also going thru the same thing. Even if she does, you'll be the reason in her family's eyes. He studies all day and night I live in my own world and my own circle. My husband was definitely worth the heartache and suffering that I endured but I am grateful that he was able to see that our family was worth a change in lifestyle.
Leave her so you can both find people that youre more suited for. By the end of the first date with my husband I knew I wanted him to be a part of my life. Follow your heart and live life with no regrets.