Continuity mistake: Laura finds the missing bow in the church, and it has the string attached, but when the policeman holds it up, the string is missing.
Continuity mistake: There are two things going on at once - Mr Danvers and the girls are at the Danvers house while the archery lesson is going on - but suddenly they merge, with Mr Danvers and the girls at the archery lesson, which, time wise, isn't possible.
Chosen answer: Maybe she thinks she's so old that she'll be back in the mortuary soon, so why go home?
kh1616