Helping a loved one through grief.

My cousin was raised by her grandfather and spent her teenage years being his carer and taking care of him. He has recently passed away and she’s taking it very hard as imagined. It’s been 4 months but it’s only now kicking in . She’s living with me since losing everything and I’m just looking for some ideas on how to make her days brighter or something I can plan for us to do that’s different to her everyday life, as she’s really depressed, spends most days sleeping, I just want to be able to do something to take her mind off of things. Anyone have any ideas on how to help someone close deal with grief. Thanks for any advice given xx