"Why didn't I tell her myself that day I meant to, and got as far as the study?" wailed the unfortunate culprit. "Then I should have been spared all this!" Why, indeed? How many of us mourn over our past follies and cowardices, bitterly regretting the wasted moment or the lost opportunity? Gwen's fault was indeed being visited heavily upon her shoulders. She had sown the wind and reaped the whirlwind. She felt keen resentment against Netta. It was a dastardly trick to have played upon her. Netta might at least have warned her that the bill was to be sent on to Miss Roscoe--then she could have been prepared for the worst. It was surely mere spite on the part of her friend, who, having quarrelled with her, was anxious to find some means of annoying her. Netta had been jealous of her new-found appreciation in the Form, and had taken this opportunity of trying to humble her. The deficit in the gate fund filled Gwen with surprise. There seemed only one way of accounting for it, and that was so painful that she shrank from facing it. Lesbia had taken change out of the satchel, and that same evening Lesbia had acknowledged the possession of ten shillings, but had refused to reveal how she came by the money. Gwen groaned as she remembered her sister's conscious looks and evasive replies. Could it actually be possible that Lesbia had abstracted this money? She was rather silly, flighty, and irresponsible, but she had always been truthful and honourable. No, it was surely absolutely foreign to her character! Then where had she obtained half a guinea to buy a new tennis racket? And what was the reason of her extreme embarrassment? Gwen abandoned the question in despair. "If she really did take it, I must shield her at any cost," she decided. "She'd get into such frightful trouble, and scolding Lesbia is like breaking a butterfly. I can bear things better than she can. But--oh, dear! What am I to say to Dad if he asks me? I can stand Miss Roscoe's wrath, but I can't face making Dad look sorry." The Principal left Gwen until one o'clock to reflect upon her sins, then summoned her again to the study, and urged her in strong terms to confess. "I will forgive you if you only acknowledge it, but if you persist in denying it, I shall have to go more deeply into the matter," she said sternly. "I cannot allow such things to happen at Rodenhurst. It is a very grave fault, Gwen. Do you wish me to send for your father?" "No, no!" cried Gwen hastily. "Then will you confess?" "I can't! I didn't do it! Oh, I don't understand!" responded Gwen, torn in two between the desire to defend herself and the fear of involving Lesbia. She did not dare to tell Miss Roscoe that her sister had taken change from the satchel, yet by that circumstance only could she account for the loss.