(((bpd mess))) I am so sorry for your loss. So much...so close.
I don't know if it gets better or we get better at coping with it. I was told to ride the waves. When the sadness comes allow yourself to feel it and if a smile creeps in....that's OK too.
It's been a long time since I lost my Mom. I miss her every day....but I am able to smile at the happiness she brought me and everyone that knew her.