Update: I just wanted to let everyone know the outcome of my dear pullet, Diane's, crop situation. She unfortunately passed Saturday evening. It appeared like peaceful death thankfully. I wanted to thank each and every one of you for your help and I plan to purchase the necessary products for if anything like this ever happens again. I put the dead bird in the freezer and plan to cut her open today to see if I can determine what happened and I can post pictures afterwards if you all are curious. I also plan to edit my original post and include everything I've done and hopefully what the issue was after I open her up for any future chicken owners who need to find information. Thank you all for you support

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R.I.P sweet gorgeous Diane, I'll miss you forever