i whipped my bat calculator from my utility belt and used some fingers to do some calculations

in 2 months you would have 9 weekends @£1700 a weekend that equates to £15,300, so there is another £1300 to account for in addition to the £6k they can't

i bet she's been putting some of the money aside, and fuck hiding it in your loft under the mattress is the best place for it