Progress?

When I took Cisco back to the field this evening, Phantom was eating in close proximity to one of the other mares.  Is this a sign of progress?

Of course, it didn't last once I turned Cisco out. But it gives me a glimmer of hope.
(I can move them into a smaller pen with a couple of other ponies. But I really want them in the bigger field. I will give it another week.)