John did not see her skating backwards as help, but instead as showing off and he couldn't help but grin as he skated just behind her, shaking his head, "I don't think a little vampire blood would work all that well? But don't worry, I think my neck'll be fine. Instead, we can just watch you show off by skating backwards and proving how good you are."
Winking as he skated with her, John basically just let himself move forward, occasionally making a push to go forward, but doing his best to just keep upright as he didn't want to break a tail bone.
"If I break my ass bone doing this, that's totally on you, you know."