Sentence:  Then came a maid with hand-bag and shawls, and after her a tall young lady....She looked around expectantly, and recognizing Mrs. Cooke's maid...Miss Thorn greeted her with a smile which greatly <WSD>prepossessed</WSD> us in her favor. 
Meaning of the word marked with <WSD> tags:  To preoccupy, as the mind or heart, so as to preclude other things; hence, to bias or prejudice; to give a previous inclination to, for or against anything; especially, to induce a favorable opinion beforehand, or at the outset.