C.S.
Homesickness is a difficult thing for anyone. It sounds like you are doing everything you can. It really will take time. As long as you allow her to miss them, and to talk about how she misses them, she can process it and will help her. Write letters, let her keep in touch daily. Videos might also be helpful. As she develops other relationships her dependance on those relationships will ease. Just keep allowing her to express her sadness while also offering activities to keep her occupied, too. Trust that this will be good for her in the long run and dont take on the guilt thoughts! If this is a good move for you, it ultimately will be good for her, too. Blessings to both of you.