Watching those videos, I wonder if the trouble is caused by how the water goes down her throat? Chickens usually tip their head up to let the water go down their throat, but with her head tipped at a different angle, the water might flow somewhere it should not go.
Have you tried holding her so the head is the right way up while she swallows? Of course, you would probably have to turn her body at some weird angle to do that.
Have you tried holding her so the head is the right way up while she swallows? Of course, you would probably have to turn her body at some weird angle to do that.