I am extremely sorry for your loss. I have been through exactly same situation unfortunately when at age of 17, my mother passed away. I wrote about her after 10 years in this article “Happy Mother’s Day (without Mother)” by Wajahat Karim https://link.medium.com/EV83kN2WFV

I know any kind of words or support can’t help you much. There’s nothing worse than losing mother. Its been more than a decade and I am still unable to believe it and forget her. I only can pray for you, your family and your mom and wish you a best of luck.

Regards