During one of Maddie's interviews, Chloe was seen in the background in her "Baby Mine" costume but she either did not perform it or it didn't place.
Season 3 Solo Drama
In Two Girls, One Solo, both girls were assigned the same solo. Abby decided to do this as she was sick of Christi constantly insisting that Chloe never got a fair playing field when it came to going up against Maddie. Although it was announced at awards that Maddie got 2nd and Chloe got 1st, the competition director later dropped by the dressing room to reveal that there was a score mix up and that Chloe in fact got 2nd and Maddie got 1st.
At the start of the episode, all of the routines besides the group were assigned to the Hyland sisters and Chloe as the rest of the girls were attending NUVO that same week.
Abby asked Kalani Hilliker to attend the competition with the team as she had competed alongside the girls at NUVO- particularly performing a duet named "Two Sapphires" with Maddie.
After Brooke and Paige performed their solos, Abby decided to enter "Two Sapphires" as a secret weapon in fear that Chloe and Paige's duet would be a "hot mess". Melissa pulled Abby aside and asked her if Maddie and Kalani could perform their duet but not have it be scored but Abby refused to let that happen.
After both duets performed, Melissa asked Maddie in the dressing room if she lied to Chloe and Paige in terms of not knowing that she was going to perform her duet with Kalani. Maddie denied and said that she had been referring to NUVO and that she hadn't been sure if they were going to perform it at Sheer Talent.
Christi then tried to comfort Chloe, who was visibly upset by the situation. Kelly also comforted her by saying "You know who your friends are". This lead to Maddie believing that her and Chloe weren't friends anymore.
Post Season 4
After the departure of the Lukasiaks in Hollywood Here We Come, Part 2, the friendship between Chloe and Maddie broke apart. This was mainly because Abby prohibited the girls from talking to former team mates (this included Paige and Brooke Hyland as well as Chloe).
The girls also accused Chloe of ignoring their messages, facetimes, calls etc. in these two episodes but Christi confirmed in multiple tweets that Nia and Holly Frazier were the only ones to contact them after the nationals blowout.
It has also been rumored that Chloe may have interacted with the Dance Moms girls at the 2016 Kids Choice Awards as Chloe could be seen talking to the Fraziers as well as hugging Jill in the background of carpet interviews.