O Partner, Where Art Thou? - S1.E6

Rika is disappointed with her mother and with Renamon for not being able to digivolve while fighting Allomon and instead getting help from Guilmon and Terriermon. Renamon goes by herself and meets Impmon, who tells her she doesn’t need a human to make her stronger. When a Dokugumon appears and Renamon is badly hurt. Rika cares for her and she digivolves to Kyubimon and easily defeats Dokugumon with one hit. Kyubimon explains that what finally caused her to digivolve was Rika caring for her.