She was Veronica's only intimate friend.

She was the niece of Cardinal Campodonico, one of Veronica's guardians.

If any one knew the truth, she might be expected to know it.
Taquisara looked at his watch, lit a cigar, and left the gloomy Palazzo Macomer, glad to be outside and to turn his face to the sunshine, and his back upon all the wickedness of which its old walls kept the secret..