Which preposition to use with tibby

in Occurrences 2%

Runaway prentice; the story of Jeffrey, Susan, Tris & Tibby in the year 1800.

about Occurrences 1%

But when he woke, there lay his mother and his sister both sound asleep; the sun was shining through the blind; he heard Tibby about the house; and, in short, it was time to get up.

Which preposition to use with  tibby