HI Clare,
No Kim has not taken over. I have not heard back from her.I, personally, think there should just be one moderator, but you could always ask the HappyCow staff what they think. Since there is hardly anything to do, one person can do it easily. If you would like to take over, you are welcome. Since it has been 5 days since I answered Kim and have not heard back, I'd safely assume she is not interested, or at least at this time. Since I have done so little, it would probably be best to email the Happy Cow Staff and ask how to take it over and find out how to do whatever you need to do. They would need to approve you so you can make posts as moderator (I think). Please email them and then get back to me please. Thanks so much.
Warm regards,
Shanasy