Success...

Well,  last time I posted I spoke about Arwen and our difficulties with catching.  Things have improved amazingly. A few weeks ago I began going back out to the fields with Arwen and Riva when we were done for the day. After a few days of this I began removing the halter at the gate and walked out to the herd with them. This has made a huge difference for Arwen.  She sticks with me when we walk back out and does not leave until I say we are done and send her to her friends. At that point she walks away and meets up with the other while I go and get Riva or walk back to the barn.  
Last weekend I walked out to get her. Spent some time deburring Leah and then asked Arwen to come with me. She and I walked back to the barn with no halter or lead. Just quietly walking with no hint of her thinking of leaving. Once we got close enough to the gate I put the halter on.  Amazing !! Things are looking up.