[ Oh no... The power of politeness compels her to step over and hover her hands at his in an attempt to get him to stop, her more complicated feelings put on the backburner. ]

N-No. It's okay, you don't have to go that far.

[ She looks up at him with apology in her eyes. ]

I was just taken by surprise. I forgot it was my birthday. So, um... thank you.

[ She's trying to convey genuine gratitude, but again given her gloomy expression, something may be lost in translation.

And still the candles burn... ]

... It's been a long time since anyone gave me a birthday cake, so honestly I'm a little overwhelmed.