Hi, OP here. Thank you all for your suggestions, I have not mentioned to her that her snoring keeps me awake, as I think that would be rude, especially as she can not do much about it. For all those telling me that I should tell her, or that it is fatal, she knows she has it, and she is also aware that it is fatal, as is my entire family. She is just one of those people who stubbornly refuses to get treated for anything, as 'it can't possibly be that bad'. My family and I have talked to her about getting a CPAP machine, but as I mentioned before, she stubbornly refuses to do anything about it.