With some hens this kind of stuff is due to something being wrong with her system, quite possibly genetic. It sounds like your red sex link is probably based on the commercial hybrid layers and their system is highly tuned to produce a lot of eggs. She may have just gone over the top.
How are you feeding them? A high protein diet can contribute to them releasing extra yolks. That’s one of the reasons commercial operations feed around a 16% total protein diet. It’s not that they are being cruel or mistreating the hens, it is healthier for them since they are so highly tuned to convert feed into eggs. If you are feeding a high protein diet you might try cutting back on the protein and see if that helps.
When a hen experiences this kind of laying problems it can cause internal problems. I don’t know where that blood is coming from, it may be related or it may not. It may be shed intestinal lining, which isn’t a big deal. Sometimes when a pullet first starts to lay it takes a while for them to straighten their system out. She has only been laying two weeks but it sounds like it is not improving. I hate to say it but maybe brace yourself for the worst. It’s not that you have done anything wrong, it’s quite possible it’s something that has been there since she hatched.
