While he was rather surprised with the interest she displayed in the trip, she half expected him to think the same. However, he was the one who had taken it a step further by discussing it with their father and arranging a more experienced adult to travel with him. Even a departure date had been organised, but for now it was delayed. Most of the work had been completed for her, which left her feeling quite guilty for not carrying out the task herself and using her initiative. Now it didn't seem so much of a big deal as the planned expedition had been temporarily put on hold for a clueless length of time. Perhaps not clueless as she was certain her mother would overcome the depression she happened to be facing not because she selflessly wished to take part in this trip but because her mother was family and all family were closely loved. Family and pack always came first, with educative experiences coming behind in her list of priorities. The trip was just a bonus, not a sole reason. If it was to happen (which she feared not), she'd scrap the whole trip if this illness never faded.
She was delighted to hear her brother kindly allowing her to join him and Frith. Really, the opposite could have played out if three participants were too many or simply because he didn't want her to come. Fortunately, none of those cases existed which was why she would thank him. After all, what else would she have done if the opportunity had been turned down? Complain to her unwell mother? Highly unlikely. "Thanks. I merely haven't planned as far as you have."