Gabriel was not surprised at Robin's move simply because he knew it wasn't Robin's move. He stayed calm, on the outside.
"I know you're not Smith so... which one are- Hmm. Scottish... Hello Will. Been a while. You're not gonna hurt her. She's no use to your Captain dead." As he talked Gabriel extended his Grace. To no avail. That was... concerning.
"And anyway," he said for Heather's benefit. "You hurt her and I'll just put her together again." At best he could achieve a stalemate. He thought of Robin and what could be done from inside him. He couldn't be cavalier. "He is there Will? Captain Smith?"