One thing is for sure, our more recently married/engaged members need to be aware that your lady's 'obligation' to her family does not finish or recede once she arrives in the UK, but rather the demands made upon her will INCREASE.
Blood is thicker than water, as many husbands and former husbands have found to their cost.
My advice would be, don't give her a hard time over it, as it is not a situation of her making.