I hope you are ok MJ

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I think if it's only that, having learned to to crop feed is a very useful skill, and should the need arise again, it will certainly give you confidence to have done it before.
Would you mind sharing what the tube you used looks like ? It turns out Kaytee is easily available here, with other brands.
My experience with sick or wounded hens is limited, but I've found this to be true. However I also encountered an exception with Caramel. She absolutely dreaded being handled when she was sick the first time and she had taken to roosting in places we couldn't reach her to avoid been taken off the roost at night. She was scared just seeing us walk by her. It was very sad and in the few months of life she had left she never really trusted us again.