Read it through once

Jo looked up then, quite unconscious of anything but her own pleasure in the prospect of showing them to one another. Something in Mr. Bhaer's face suddenly recalled the fact that she might find Laurie more than a "best friend," and, simply because she particularly wished not to look as if anything was the matter, she involuntarily began to blush; and the more she tried not to, the redder she grew. If it had not been for Tina on her knee, she didn't know what would have become of her. Fortunately, the child was moved to hug her; so she managed to hide her face an instant, hoping the Professor did not see it. But he did, and his own changed again from that momentary anxiety to its usual expression, as he said cordially,--