I ' ve not been around much lately have I , so here I am to stop by and say hello . I have n't forgotten you ! Mum has been partying hard and that means so have I. Mum organised a hen party for Jane and she packed me off to Auntie Maria 's for the weekend , so I totally missed this one . But I heard it was the hen party of the year .

Question: Why does Mum partying mean speaker is partying too ?
They spend all their time together .