Who says I didn't? What has more value? A human life or a toy's life? A human's life or an android's life? A human life or a puppet's life? A human's life or a robot's life?
If you could save two people you did not know, or one person you did know and love, who would you choose? Most people who aren't psychopaths would choose the person they knew and loved. Our ability to reason separates us from being vicious animals, but our ability to love separates us from being soulless automatons. Through love and reason, I choose who matters most to me. Now we've quantified that Human beings have varying value based on the individual, which can be extrapolated to say some Humans would save their childhood pet over another Human they did not know or care about; and some Humans would save their friendly artificially intelligent robot over another Human they did not know or care about. Now, in the case of Expedition 33, Maelle saves those she cares about, and those who are not "real" but have real souls and real emotions.