The answer to that seemed pretty obvious to Kirby. "This, is a dream, so can't you just try waking up, poyo?"

Of course, there was still the question of why she was here to begin with. Maybe the Fountain just wanted him to meet her for some reason? Well, they'd met now, and maybe they'd meet again at some point if it was really that important. If she had something else she needed to do, there Kirby didn't see any reason for her to stay.