"You're stronger than me, Diana." Nida said while she remembers her past. Nida could somewhat relate to what Diana is experiencing because she knows the feeling behind those indifferent gazes and mistreatment that Diana is suffering.
Diana looked at Nida because of how gloomy the sound of Nida's voice was. She is actually grateful to Nida because, despite the fact that they have never spoken before, Nida always stays with her when she is being punished inside the dog house. At first she was terrified of Nida's presence, but later on it became her only comfort and support.
The dark and smelly dog house becomes silent once Diana just stares blankly outside the rusty bars after glancing at Nida. Nida doesn't actually know how to comfort anyone as she doesn't actually have a normal friend. She just speaks whatever comes into her mind.
"I actually experience the same thing as you."