[That...actually explained some things. This was probably the first time Casey had lost someone when he felt he could do something about it, though.]

[His tone is still gentle when he speaks.]

You're not at home, Casey. The usual rules don't apply.

From what I know, Greg was with Rose when- [He died.] -it happened. Why would any of us have a reason to think he was in danger when she was with him? Are you going to shadow them on all their dates now, like a chaperon?

Just because you're capable of doing something doesn't make every situation your responsibility. Or your fault.