Im really sorry for your loss, grief is such a hard thing to go through.
Im not familiar with your story or if you have any offline supports.. perhaps tomorrow it would be good to get in touch with one of those to help you through?
I dont think Hannah would mind being woken if your in need, please think about waking her for abit of support tonight. Having a hot chocolate seems like a good bonus.
Something i do for my nan who passed away 2 yrs ago is to light a candle in memory of her. I find a candle thats her favourite colour as well to make it abit more special. Some people write a letter to their loved one who has passed saying how much they miss them, what you would like to say to them and share good memories. Almost as if you were talking to them. Maybe these are things you might like to do to...
Remember to look after yourself aswell ,find some things that help you to self soothe weather it be a good book,a movie or a walk somewhere. Just things that give you moments of calm amongst the chaos.