I wish i could spend more time with my mom ?

Here's an idea, since she's always working her butt off, give her something that she can do by herself, or something you can both do together. If you want to give her a present you can but her an hour massage, or if you wanna do stuff together, you can do anything that you have in common. But something you're mom would love, is if you went shopping with her and help her carry around groceries, or offer help when washing the dishes, or anything to make her feel appreciated. Your mom sounds really caring an loving, make sure she knows you're super grateful for that.