I would have been absolutely devastated if those were my dad's last words to me and I'm scared that something similar will happen to my mom.
Does it make you afraid to think about loosing your mom?
Yea, my mom means so much to me and is a huge part of my life.
I'm sure that she knows how you feel. But just in-case perhaps say it again to be sure.
She knows I love her.
You should do your best to be honest with people and let them know the feelings you have about them. It is not corny or over emotional to tell someone how much they mean to you. This can really make someones day and brighten their spirits up.