That gun stays trained on her. "I'm not handing her over to anyone. They come anywhere near here and I'll kill you both." That hardness in his eyes says that he would do it too. "So you better tell them to fall back."

If she thinks back on what Dr. Skoval's boss said... she might put two and two together. Then again the table not too far off behind Bucky with the different contraptions on it might alert them to something too.