Satori just said she adopted all the animals (including Orin) because she thought it would make her look more moe, not because she actually liked or cared for the animals.
So, worse than knowing you were adopted, it's like being told you were adopted because it was the fashion at the time.
Eh, she probably read what Kosuzu expected her to say and said the exact opposite for shits and giggles.
For a hated being like me to raise them...Did you have some motive for starting to raise pets, Satori-san?...the gap moé's off the chain.These little ones were all abandoned animals, you see.Is she talking about us?No way, Satorin's a total saint!?