Sorry to hear this. Are you going to have a necropsy done to be sùre you are dealing with Msrek's? If you are, perhaps alerting the s tore where you got them would be in order?
Please don't feel like that! We were all newbies once. Everybody has to learn and this is the BEST place to do that. There are so many people here with years of experience, training and research, and all they want to do is help people like you and their feather babies. That's why BYC exists, so...
Unless you're getting soft or shell-less eggs, she's probably getting all she needs. It doesn't take much and many keepers think their hens aren't eating it at all because they don't see the level of these items going down much. But they do.
The crop (in front) is where food is stored temporarily. Sometimes called, colloquially, the "craw." Food is digested in the proventiculus and gizzard, aka the equivalent of the stomach. Grit in the gizzard grinds grain and seeds, because chickens don't have teeth. You should always provide a...
No dumb questions here, if you don't know, ask. Just feel her chest. Do it now and you'll feel a lumpy area, probably on her right side, that feels like a pocket full of food. That's what it is. She will digest that during the night. When you feel it in the morning it should feel flat. Let me...
Her crop looks pretty engorged, not abnormal for this time of evening. Can you put her in a crate over night and check her crop in the morning before she eats or drinks anything and report back whether it is empty (flat).