Oh @Thby2023 I'm so sorry for the loss of your lovely Mum. I felt I had to comment as your post resonated with me somewhat. I lost my Mum coming up for 18m ago, suddenly and totally unexpected. Her first gc, my baby was 3 months old at the time. She was absolutely besotted and was the happiest I'd seen her for a while after a messy divorce (not my Dad). She was just getting her life back on track and had so much to live for. She was robbed, I was robbed as was her gc.
I'm not sure how I got through the next 9m. As an only child, funeral prep and house clearance all fell to me with a 3mo. It was tough, and even now I still think about her everyday, some days it's happy memories and others it's how much I miss her and wish she was still here. What did help comfort me was thinking how Mum had brought me up has shaped the Mum that I am, I know she'd be strong and would want me to the best Mum that I can and being the Mum she was has in some sense shaped me to know that I can get through it. I won't be the same person I was before she died, will always carry that sense of loss and grief, but through her love and support has helped give me the coping mechanisms that I can carry on without her, and I know that is what she would want. This was what helped me in my darkest days of grief and sleep deprivation.
It will feel hollow for me to say this, but it does get easier in that you learn to live with the grief, not to say it doesn't bubble over every now and again, I had a cry yesterday while out with the dog.
Your doing great for both your children and I'm sure your Mum would be very proud.