Interestingly enough cats don’t Meow to communicate with each other. That’s something that they reserve for humans.
Cats vary in the degree of how verbal they are. Some siamese types “talk” almost constantly all day long.
Other breeds are more on the placid silent side. When your cat meows to you it may or may not mean anything specific (like more water) It may simply mean that she’s checking in with you throughout the day.
Or it might mean that she wants a little cuddle or to play. What I would usually do when mine randomly Meow to me would be to talk back to them, letting them know that I acknowledged their communication.
I usually found that if the wanted to be petted they’d come over and rub up against me. And of course they were always up for playtime.
It’s great that you respond to your cat and make sure that her needs are met, bUT if you’re especially busy sometimes just talking back to her is enough.
If she needs anything further she’ll likely let you know.
And, just for the record, most owners don’t spend nearly as much time playing with their cats on a daily basis as the cats usually want.
Jackson Galaxy, a cat behaviorist, frequently recommends a specific series of play exercises to solve any number of problems, especially for indoor cats. Check out his website. Lots of good info.
It’s almost impossible to play too much with your cat. So if you’ve got the time and energy, kitty will definitely appreciate it.