Numbers Lady

Fiorella has a fascination with numbers. .

She noticed years ago that her three children were born exactly sixty-nine days apart from each other, and recently realized that there's a pattern to the addresses at which she has lived: 429, 2609, pause, 809, 4607, 11508, 9907, 141.  Three numerals, then four; starting over as a married woman with three, then four, then five, then relaxing to four, and three.

There's also the constant 1-10 counting she does in seven languages.

Must be her vampire heritage.