I would try to clean her up (her being sticky won't help the vet). Use a damp towel or an unscented baby wipe and then let her dry (it will take a while, but she will be FLUFFY afterward) and then maybe a dust bath. Then, if it happens again, something may be wrong. If not, it was probably a romp in the pee!
How is she acting strange? Is she playing/pooing/eating/drinking/peeing? She probably feels funny being sticky. She wants a dust bath I am sure. If she just isn't herself tonight (playing and eating/pooing) or any other symptoms appear, consider taking her to the vet. I have seen my chins pee and then "roll" right by it....it is all too easy for them to get in their pee unless you have a wire floored cage!
Keep us posted.