Thank you for keeping us updated. I have been checking into this forum every day to see if there was a new post from you. It's good that the mother cat is associating your smell with food and no harm done to her kittens. I believe, as Catty1 suggested, that has seen you. The fact that you are visiting frequently is, hopefully, reassuring your neighbor that you will take care of the whole family and free his property of their presence. Good work! and Good luck!