Both characters were a great addition in S2 and I mostly loved that they were siblings. That was a nice change to the 'gang' - they always looked out for each other and were such good friends. They were very sweet.
I liked their scenes when Jack was "coming out" - it was a nice to see a realistic reaction from his sister, although she came around in the end and without a doubt would stand by him, at first she was shocked and to a degree,
hurt. The rest of the characters were so supportive, and rightly so, but it was refreshing to see that not everyone takes that kind of news lightly and I felt Andie's reaction was realistic. Then it was lovely to see her try and protect Jack from their Dad at the end of
"...That is the Question" - I really felt the bond between these two.