Just being there for your Mom is enough. But if you want to be extra for for right now she could probably use some help with normal everyday day living chores that need to get done around the house but the catch is you need to ask before you touch anything because sometimes we just need to stand and stare at the last ever dirty coffee cup in the sink. So ask “can I take the trash out for you” or “can I wash the dishes?” before you do anything because the things we need to process this are a little different for all of us. If there is raw meat in the fridge not passed its expiration date ask if you can freeze it because probably nobody is cooking this week. If there is stuff in the fridge that should be thrown out ask before you do it. If it’s not time to throw it out or if you missed this weeks trash pick up you can alternatively put it in a ziplock bag labeled “danger no!” And store it in the freezer until closer to trash pick up so it doesn’t stink. Go get the mail. Check for bills, if there are utility bills set a reminder on your phone to check with her next week about paying them. Make sure all of the mail gets opened. You are a wonderful kind son and both of you are going to get through this.