similiar as your case.
我同c6結婚后,生左2 kids, 跟住我做左ftm,都唔可以減99家用 (should give more 家用 for 99 as everything are expensive now!)。
However, I think it is reasonable because we should 'think twice' before 生 BB ($? time? age? .........).
We should not deduce our parent's 家用 after 生左 BB!