I had bought my mother her first Netbook 2 years ago and i installed Ubuntu on it.. She is using it after like an hour introduction. While it was her first time

I had bought my mother her first Netbook 2 years ago and i installed Ubuntu on it.. She is using it after like an hour introduction. While it was her first time to use a PC. 3 months ago my dad got her a new Laptop which had Windows on it. she called me the next day to install Ubuntu on it !