Bit over 4months ago I let a lady put her horses on my 2 acre property seeing she had now where to put them. As i work away i told her that she had to look after them as they are hers. 7weeks later she came only cause i rang and told her that they had no water. Now, they have no feed pushing fences on road side as they are looking for food. I've told her to move them but she just more or less is refusing to take them away. What can i do legally under Property Law to get them off as i'm not charging her for having them here and i was also told that i am liable for the animals if they get out hit a car or just anything really.