Offering support to your sister during a difficult time like hosting a funeral can be very meaningful. You might want to express your condolences, acknowledge her feelings, and offer your help. Here’s an example of what you could say:
"Hey [Sister's Name], I just wanted to say how proud I am of you for hosting everyone during this tough time. I know it can't be easy. If you need any help with preparations or just want to talk, I’m here for you. Remember, you don’t have to go through this alone."
This approach shows empathy and offers practical support, which can be very comforting to her.