Computer Memory Upgrade

I have planned to have vacation to my family in Philippines at the end of this year. Good thing that I remember always that every time my mom using her PC at home always complaining that she is always hanging and running so slow when she chat with me. I told her need to buy a new computer memory to upgrade to make more good condition high performance, which is a solution for low performance computer or laptop like the one I had done to my laptop. My laptop now works good and better performance now than before. I told her buying a computer memory is not expensive now everyone can afford it.