No, I want to. An hour and a half. I'll tell you the future. Of course, this is difficult to do if she is in another country. I would not feel guilty about this fear of losing her.
People are people and things happen.
But perhaps the things that do happen are not serious. I would write many letters. Daily if possible. And I do not think it inadvisable to let her know, frankly and before she leaves, that you have these fears of losing her. Perhaps she's impressionable.