Cats vomit quite a lot (some more than others). I don't think they need to
skip a meal. None of ours ever have and they seem perfectly happy eating
straight after throwing up. Cats are pretty sensible with regards to their
health most of the time so you could have just put some food down and let
her decide whether she wanted it or not. I suppose the worst that could
happen is that she throws it up.

Is she spayed?

If she isn't spayed, maybe you did the right thing.

I do not really agree with your premise about humans needing to
skip a meal.

I don't think cats should skip a meal. Cats vomit fur balls. They
might vomit also because of intestinal/digestive problems. In the
latter case, maybe their diet should be changed or maybe they
should be taken to a veterinarian. When concerned, I carefully
examine my cats vomit for hairballs to see whether there is a good
reason or whether she might need help.

Good luck.

Most cats hack up their fur balls by intentionally vomiting. Chance are,
the cat you're caring for is doing this. Such vomiting is certainly an
annoyance, but its nothing to worry about. If this cat has heavy fur,
the problem might be worse than usual, especially during warmer months.
Try brushing the cat's fur once or twice a day to reduce hair balls, and
thus, reduce vomiting.

After my cat vomits he is often hungry and goes to eat from
his dry food. It's the canned that seems to cause it because
he eats it too fast. I would not withhold food from her. Cats
just do this, some more than others.

Who does the cat belong too? If it's not  a stray or unwanted it's
best to feed
her.
 Alison

Not necessarily.  Cats puke a lot - if they eat a bug or get a hair
down their throat, or something like that, they will puke.  If she's
hungry, she will eat.  The only time I would withold food is on the
advice of a vet or if the cat vomits repeatedly.

-L.

I would feed her less and see what she does and if she keeps it down give her the rest of
the amount you usually give her.  If you know the owner and are on good terms with them
you might ask them about it and if it is a regular ocurrence suggest they take the cat to
a vet to be checked out.

I had an older cat that developed stomach problems and had trouble keeping food down.  I
took him to the vet and the vet put him on Metoclopramide Syrup twice a day like 1/2 an
hour before feeding times.  It worked for him.  He lived until he was about 17 years old.

http://members.aol.com/larrystark/

I usually give my cat at least 15 rest after vomiting since eating right
after vomiting can cause more vomiting.
But I have not heard any other vets that suggest skipping a meal.
If a cat does not eat it can really mess up their system.
For example, after 3 days of not eating a cat will most likely develop
hepatic lipidosis.  The fat stores start to be used for energy in such a
manner that it actually "clogs up" the liver and can lead to life
threatening situations.
If you are watching a cat and find that it gets sick often, I would call
your vet (or preferably theirs) to discuss the situation.
When I asked my own trusted vet when I should get worried about my med hair
cat that seems to vomit regularly, I was told that if my cat vomits more
than 1/week start looking for reasons.