Read it through once

It was Mrs. Welland's turn to grow pale as the endless consequences of her blunder unrolled themselves before her; but she managed to laugh, and take a second helping of scalloped oysters, before she said, struggling back into her old armour of cheerfulness: "My dear, how could you imagine such a thing? I only meant that, after the decided stand Mamma took about its being Ellen's duty to go back to her husband, it seems strange that she should be seized with this sudden whim to see her, when there are half a dozen other grandchildren that she might have asked for. But we must never forget that Mamma, in spite of her wonderful vitality, is a very old woman."