So i recently got the Magma Stone after telling Cera that I'd keep the stone. After this, I went back to Tesla's Villa and saw Melia and Venam discussing on the balcony - and Melia flew away with her Togekiss. I went inside the Mansion and search the whole place, but no one's there. After that I literally walked through the whole region trying to find something, but I found nothing. I don't know if this is a bug because I said I would keep the stone, but one thing is for sure, I am really desperate to get some help. I'll leave my savefile down below. Oh and yeah, I've tried my luck on finding help from the Internet, but there was no help to be found.
Thanks in advance,
Game.rxdata