They soon found reason to alter their opinion.

It was very soon discovered that whoever cast an indignity on Topsy was sure to meet with some inconvenient accident shortly after;--either a pair of ear-rings or some cherished trinket would be missing, or an article of dress would be suddenly found utterly ruined, or the person would stumble accidently into a pail of hot water, or a libation of dirty slop would unaccountably deluge them from above when in full gala dress;-and on all these occasions, when investigation was made, there was nobody found to stand sponsor for the indignity.

Topsy was cited, and had up before all the domestic judicatories, time and again; but always sustained her examinations with most edifying innocence and gravity of appearance.
Nobody in the world ever doubted who did the things; but not a scrap of any direct evidence could be found to establish the suppositions, and Miss Ophelia was too just to feel at liberty to proceed to any length without it.
The mischiefs done were always so nicely timed, also, as further to shelter the aggressor.

Thus, the times for revenge on Rosa and Jane, the two chamber maids, were always chosen in those seasons when (as not unfrequently happened) they were in disgrace with their mistress, when any complaint from them would of course meet with no sympathy.

In short, Topsy soon made the household understand the propriety of letting her alone; and she was let alone, accordingly.
Topsy was smart and energetic in all manual operations, learning everything that was taught her with surprising quickness.