Foaming?

You nedd to take your cat to the vets right away.
There are three possible scenarios:
1. she has licked her coat and ingested some of it.
2. she has an allergic reaction.
3. she's been poisoned and the spray has re-surfaced the symptoms.

i can tell you that it is most likely to be number 1.
you should phoned up the vets and describe the symptoms you've just described here to get medical advice. this has never happene d to any cat of mine and i've had twelve.
then take her there to be seen by a vet just to make sure it isn't an illness, if thats what they reccommend.
my close friend is a vet so i know a lot about this kind of thing. what you have described seems suspicious to me. something might be wrong. you should be wary of it.
are you sure you didn't spray any in her face by accident? because that could be what the problem is.