So sorry to hear of the recent bereavements . All I can say is that time helps - I have never really got over my Dad's death but I have learned to live with it iyswim.
My Mum is 59 and has been a widow for 15 years.
On the whole she copes marvellously well although her house is generally a shithole and needs a lot of running repairs.
She is increasingly talking of getting old and is doing things like installing drawstring curtains (she has big windows and huge heavy curtains) and talking about walk in showers as she feels she is getting too old to climb in and out of the bath.
My sister is just 16 and is the only one of us who lives at home (we also have two brothers, both like me in their 30's). My brothers and I all live from 50 to 200 miles away. I do worry about what will happen as time goes on as she has been unwell, she has a heart condition which is well managed at the moment but could well deteriorate as she gets older. Sooner or later my sister will move out (they don't really get on) and she will be on her own. This is all compounded by the fact that I am the only one in the family that can drive, although dsis will learn once she gets to 17, she won't be able to afford to run a car and also it's a lot to ask of someone so young to be Mum's taxi.
Lots of reasons for moving closer to home I suppose but dh doesn't want to move to that part of the country.
I think Mum will cope less well once dsis moves out in a couple of years. I don't think she realises how much dsis does for her and also having a teenager around keeps her young. Dsis will probably go to university so will be back for holidays (probably) but Mum will be spending a lot more time alone.
She is a teaching assistant and is planning to cut her hours once she reaches 60 but not give up completely. I think this is a great idea for now as it keeps her going, gives her a reason to get up in the morning and is social for her.
I wish I could live closer, or that Mum would move closer to her sisters so she would have company outside work. Neither is looking likely though and it bugs me.
Ramble ramble ramble ramble