The same happened when i was doing the explore mode, after defeat Haibara An, i just leave her in the gift box and kept exploring, in the next girl in chance time the card i choose was her, that i didn't got yet and the same image was shown, as soon i saw that i came to my card's list and listed by lowest lvl, Haibara An was not there, only after i get her from the gift box that i was able to increase her level during explore mode.