Though it remains the fact that if the person you loved was incapacitated as Luffy is now you would try to do whatever is in your power to aid him.
Her panel and comments make it seem like she is running over to help Luffy
Like I've been saying if Hancock does something now that won't be ignored by big names then this betrayal argument will be way more valid and some theories can actually progress and possibly come true.
For all we know Oda's been foreshadowing Hancock's death this whole time. Her constantly saving Luffy, out of the blue panels to see her reaction to something that happened to Luffy. She might just be so moved to help WB in some way and then get frozen by Aokiji.