Second, her impression of her mother and brother is the key to giving herself extra points.
Third, do what she wants. Now that her brother is here, he should get on well with her future brother-in-law, but friendship tips, don't be too condescending.
Fourth, have opinions. If they have questions, you should help them give advice, whether you choose or not, and try not to spoil their fun.
As for the last, please always pay attention to your appearance. Climbing the mountain is very tiring, try to stay normal.
That's it, good luck ~