Nicole Peterson is one of Kesha's past assistants. She worked for Kesha from 2011-2013 until she quit to pursue a relationship with her boyfriend. In Assistant, an episode of Ke$ha: My Crazy Beautiful Life, the episode focuses on Ke$ha looking for an assistant to fill her shoes. Erica Summers replaces her. Kesha has described her as her best friend.
Tessa Schonder is Kesha's Nashville assistant. Tessa helps when Kesha is home in Nashville. She helped Kesha with her ebay store and tagged along on her blind date.
Erica Summers is Kesha's current assistant. Kesha hired her after Nicole Peterson quit to pursue a relationship with her boyfriend. In Assistant, an episode of Ke$ha: My Crazy Beautiful Life, the episode focuses on Kesha looking for an assistant. Monica Cornia interviews the first applicant, Brianna, and they decide to bring Brianna out to a bar that night to see if she's responsible and doesn't drink. Brianna fails. The next day they decide to interview their second applicant, Erica. Monica and Nicole interview her and afterwards her and Kesha's mom, Pebe Sebert talk on the phone. Kesha then meets Erica, and after a brief chat hires her on the spot.