Hi op,
I'm sorry about the loss of your dad..
I'm in more or less the same situation.
My dad died really suddenly and unexpectedly 5 years ago in early 60s- leaving mum at 59...
I'd describe my mum as almost a manic depressive. Some days are fine, others are awful. She thinks she's the only one in this situation. She will compare herself to others, but it's always worse for her. Every time.
If I'm ill- she's ill too, but worse. If I'm tired, then she hasn't slept at all- so obviously much worse. Everything is like a competition and she has to be the winner in terms of being worse off. I don't bother telling her anymore.
I've been in the position of deliberately not speaking her for days at a time, as I haven't got the headspace to deal with it. Then suddenly, she'll do an about turn and it'll be ok for a bit.
She has joined several groups/social things and I suspect she is fine whilst there. Then she'll be back at home complaining about everything.
She helps me once a week with collecting my children from school when I'm at work. There, she is the dutiful grandmother. Afterwards, she complains that she is exhausted because she had to have the children and she hadn't slept the night before.
Or she gets a cold, and she'll blame the children even though she'll have been to half a dozen other places with other people that week.
Etc etc etc....
I do sympathise greatly.
I've coped by simply pulling back a bit. I use the after school club wherever possible so she doesn't have to pick up the children. Or I work the weekends when my husband is at home. I don't always phone. And I'm not always available... And I try not to feel guilty.
I've also found a few home truths haven't gone astray at times. (Said as diplomatically as possible) They have been a good wake up call for her.
Some things have slowly improved- for example she's always relied on my dad to do certain jobs and roles- she's learnt to do a lot of these herself now. Which was good for her self esteem.
One of the biggest things I found that helped, was changing the way we do things. For example Christmas. It was never going to be the same- so don't try and keep it as it was before. Doing it completely differently was better for everyone, mum including. It meant we couldn't compare. I apply this to as many things as possible. Maybe you could encourage her to do the same.
I don't know how to send private messages on here, but if you do, and every fancy a chat, I'd be happy to talk...
Look after yourself... 