I got a 4 month old goose a couple years ago that had been on pasture with other geese and hadn't been handled, so consider yourself much luckier than me because you'll be able to win yours over better most likely,. First just take your time, they have to gain trust. She has lost the only family she has known and now your it. So first just spend quiet time with her just sitting with her on her level not trying to hold her let her come to you. Most goslings love chopped romaine lettuce so you might try starting by putting some lettuce either in her water or close by be sure she has access to grit before giving her anything other than crumble. Grass is also something geese love so if you can get her out in a small confined area with you she will probably love being able to munch on some grass and can probably get her own grit from the ground. Try not to chase her at all. Being a prey animal she may take this as you being a predator. I usually lean over and herd my 2 if I need to get them some where. with my arms stretched out wide. Best thing is just to go about it all very slowly.
