Hello, I am new here as well and dealing with loss of closest family member. I have been told by someone who lost their father that even years after I will get sad moments and its really disheartening. I think what helps me the most is belief that the person is not actually gone.
Trying to talk to them and hoping they can hear us and try to not worry them too much with our grief. I always remind myself that my beloved person who is around me and keeping an eye on me will get even sadder if I cant continue on and enjoy life so you should always push away the dark thoughts and repeat to your mother that you love her.