She had cherished her anger till it grew strong and took possession of her, as evil thoughts and feelings always do unless cast out at once.

As Laurie turned the bend, he shouted back...
"Keep near the shore.

It isn't safe in the middle." Jo heard, but Amy was struggling to her feet and did not catch a word.

Jo glanced over her shoulder, and the little demon she was harboring said in her ear...
"No matter whether she heard or not, let her take care of herself." Laurie had vanished round the bend, Jo was just at the turn, and Amy, far behind, striking out toward the smoother ice in the middle of the river.

For a minute Jo stood still with a strange feeling in her heart, then she resolved to go on, but something held and turned her round, just in time to see Amy throw up her hands and go down, with a sudden crash of rotten ice, the splash of water, and a cry that made Jo's heart stand still with fear.