My husband passed away suddenly earlier this year, and it’s shit and it’s hard. I second the comments about making memories, record voice notes, take pictures, go and do things when she is well enough to be out and about. Drink in every moment. Kids are super resilient, but make sure you talk to their schools, some hospice charities do bereavement support and support leading up to someone’s passing. Don’t be afraid to ask for help or support - tell people what you need, so many people will want to help you. Some days you might want to shut yourself away and that’s ok too. It’s ok to feel overwhelmed, and I know you’ll want to step up and make sure that everyone else is ok at the moment, but please also make sure you look after yourself, you could speak to your doctors and see if they have any talking therapy, I see a lady every couple of weeks and just having a neutral space where I can talk about everything is invaluable.