HYDRA thinks it's quite adorable that the twins are so overprotective of one another, even to the point of putting themselves at risk for the sake of the other sibling.
They also think it's rather handy.
Especially when you can lock the two of them up in separate, sound-proof cells away from one another, and offer to leave the other twin alone so long as the one in front of you gets on their knees like a good little girl/boy and does whatever sick thing you tell them to.
After all...they're never going to find out that you didn't keep your promise. They're just going to keep telling each other that they're okay because they don't want to admit what they did to ensure the other's "safety."
Overprotective Twins Trash
They also think it's rather handy.
Especially when you can lock the two of them up in separate, sound-proof cells away from one another, and offer to leave the other twin alone so long as the one in front of you gets on their knees like a good little girl/boy and does whatever sick thing you tell them to.
After all...they're never going to find out that you didn't keep your promise. They're just going to keep telling each other that they're okay because they don't want to admit what they did to ensure the other's "safety."