It is not safe for any animal to ingest neem oil, but usually, the smell means that dogs won't lick it (horses too). I would suggest washing the paws, applying the oil, and being with her for several hours so you can monitor her. If she licks it, or if she reacts to the neem, get it off of her quickly. I'd suggest doing this in the evening when you are near her (presuming she is not an outside dog) and not going out to work. If this works, you should only have to do it a few times. Also, there is always one of those veterinary collars that are shaped like a funnel.