My cat keep meowing but I dont know what she want...

my future profession is a vet and i think your cat may be ill. there is not enough detail. you should observe whether it eat regularly and press on its body lightly to see if there is pain. if there is pain on it, you should take it to the vet.

Is she spayed?

Maybe she's sick. You need to watch to see if she's going to the bathroom normally and if she's eating and taking in fluids. One of my cats had a urinary problem for a little while where she was trying and trying to go and nothing was coming out. She was drinking alot so I changed her cat food to the kind for urinary health and she was back to normal after a few days. If you see any signs of illness in your cat that doesn't get better within a few days you should take her to a vet.

Sounds lonely. Are you giving her enough attention. When mine would but, he wanted to play. Wanted all of my attention. Could have an upset stomach also. Good luck, Have fun and play, I have a dog, when I get on the computer she thinks she needs my attention. she moves my hands and gets totally in the way, Animals are like children. I have had many and they are all the same, (animals that is).