The nonverbal signal from Ben was all Ginny needed, she knew it must be so very difficult for him, but it was essential to focus and get this part of things perfect. Ben had sacrificed so much for them, it was imperative that every part of the extraction and obliviation be exact.
"Think of the memory of the rescue really hard, Ben. Push it to the front of your mind, as close to your forehead as possible. Any detail you want me to hold, like a moving picture. When you're ready, touch your wand to your temple, and slowly pull. I've got the vial right here to catch it. Any memory you want to keep, we put in here." Ginny indicated the vial in her hand, her wand in the other, at the ready.