Kacey coming back to help out Gravity 5 in "How To Rock Braces and Glasses."
Kacey and Stevie's fist bump in that scene, to signify their new status as friends.
Stevie giving up her chance of winning the bet to stick up for Kacey in "How To Rock a Messy Bet."
Kacey dropping out of the election for class president to support Kevin in "How To Rock an Election."
The end of "How To Rock a Secret Agent", where Kacey rattles off Stevie's favorite color, middle name, and birthday, all things that Stevie had previously called her out for not knowing.
Moments where Grace thanks or compliments Gravity Five. She really can be a nice person when Molly isn't telling her what to do.
The end of "How To Rock a Lunch Table": Kacey, after spending the whole episode obsessing over sitting at the Perf table, decides (with a little help from Zander) that her current table can be just as awesome as long as her friendsare there.
Stevie encouraging Kacey during her part time job at Danny Mangos.
Kacey helping Stevie get her job back.
Kacey introducing the members of Gravity 5 by name on stage and saying they're a team she's proud to be part of.
Anything between Nelson and Grace.
The ending of "How to Rock a Singing Telegram"
Grace: You know Nelson, if you had asked me to go to the dance, I would have said yes.
Nelson: You would? Will you go to the dance with me?
Molly: If Kacey and I can find common ground, anyone can.
The ending of "How To Rock Camping" was really sweet. After successfully saving Zander from the poisonous berries he ate, the group sits by a campfire and sings "Only You Can Be You" together. For one night, it's like the social barriers that typically divide them have disappeared.
Gravity 5 still letting Grace perform with them after Kacey comes back in "How to Rock Cee Lo"