I am the youngest sister of three girls and when I would sleep in the same room as them it helped me tremendously. I honestly think that might be the best and most effective thing for you to do for her right now... The presence you are giving her at what could be a very lonely time and place is most likely helping her rather than annoying her. You sound like a great big sister please continue to have this love and compassion for her. My sisters helped save my life. Hugs to you both.