My ex wants me to give her $1300 but I feel the need to not give it to her.
Why are you not wanting to give your ex the money?
It is the money my mom made as a lot of sacrifices for me. I don't want to see her suffer for this matter.
Unless you have to pay back money that you borrowed from your ex, you should not feel obligated to give your ex money. Instead, you should let your ex know that they have to find another source of help.
I don't feel guilty.
I'm glad you don't feel guilty about it. Like I said if you don't owe this money to her then you are under no obligation to give her this money in the first place.