Do you know if they're adding anything extra in the blends, other than the protein? Also, what do you mean the beef went right through her? Runny poops or is it only the gas you're concerned about? With the turkey and the blood, since the blood is red in colour, it means that she may be straining when she poops. It would be dark red blood if her insides were irritated. For my guys, their poop is always more solid with the turkey, mainly due to the ratio of bone to meat content. Turkey generally has a lot more bone than beef. Sometimes, I would add tripe or anything boneless such as pork heart or tongue to the turkey blend to soften their stools.
I'm wondering if you're switching the proteins too quickly. Is it correct to assume that she's tried all those meat types before?