So sorry for your loss. It is tough to lose a parent and especially this time of year with the holidays.
I lost my 50 year old brother to cancer 9 years ago and he went into hospice just before Christmas and my parents had to bury their son. Now Dad is 89 and Mom is 87 and I just got them into independent living late this summer. The sale of their house of 52 years just closed this week and now Dad can focus all attention on Mom. Her health has been bad for years and after being in ICU numerous times the past 2 months, it was time for Hospice to step in. They are 3 hours away and I have been making the trip home every weekend to spend as much time and do as much as I can for them.
Cherish your memories of Mom and reach out to family and friends and us here to let you know you are not alone and help in your grieving.