My female cat Ryu about a month ago finished weaning her kittens. Problem was before we could manage to get her to the vet to get her fixed (as I was advised to wait to get her fixed until she wasn't nursing) she got outside and is once again pregnant. (I do have ideas on REALLY good homes for this litter of kittens and every precaution imaginable is in place to keep her inside). The problem is her last litter still attempts to nurse on her and she's too far along to successfully deter them from nursing. Now she wants away from them and they won't leave her alone, how can I get them to leave her be so she doesn't become distressed?