I work in IT, and I purposely mess with my grandma's computer just so I can see her smile when I fix it for her.
That's kind of wholesome. I hope that's the only reason that you mess wither computer though.
I just like to see people smile when I help them, especially my grandma.
I bet your grandma really appreciates having you around to help her. You shouldn't intentionally mess up your grandma's computer though. I know you are doing it with good intentions, but you still shouldn't knowingly damage someone else's property.
I owe her for introducing me to the love of my life.
It sounds like she has played an important part in your life! Instead of messing with her computer so you can fix it, you should just do nice things for your grandma to show your gratitude. Make her dinner from time to time, or just take her out to dinner to spend time with her.