If you can't wash it out then maybe she's got some sort of growth in her eye. I'm just guessing, but it very well could be. If it is she would need to have her eye removed if she was going to live. The eye is a straight path to the brain, so if she starts stargazing or she gets wry neck, then she should be put down. I know that both of those diseases are seen almost only in chicks, but hey, it could happen.