eight o'clock
It will be quite impossible for us to be found out . '' Lucy talked to Phyllis for some time , and finally persuaded her to act as her accomplice in the matter . It was a rule at Sunnyside that the smaller girls , consisting of Phyllis Flower , Agnes Sparkes , and little Agnes Frost , should go to bed quite an hour before the other girls . They usually had supper of milk and a few biscuits , and went to their room not later than eight o'clock . The other girls did not go to bed until half-past nine , and had a more substantial meal at eight o'clock . Phyllis Flower , therefore , for every reason , was best able to perform the mean trick by which Lucy meant to sever the friendship between Irene and little Agnes ; but the child must be slightly alarmed , otherwise the hedgehog might be put into the bed and she know nothing about it . Consequently , just before the younger children 's simple supper was brought in on a tray , Lucy came and sat down near Agnes Frost .