So when Lin battles you in Titania's gym, she uses an Alolan Ninetales--leading one to believe she took Ame's for herself. Later, she uses a Gardevoir to suck Samson into the void. This, of course, is leading to speculation that she somehow broke Gossip Gardevoir's will and is controlling her now. That would make Lin terrifyingly powerful, since Gardevoir was so intensely loyal to Radomus that she had sacrificed herself for him just ten minutes earlier.
But wait...haven't we seen Gossip Gardevoir being disloyal once before? Oh right, that was a Ditto.
So what if Lin's Gardevoir is also a Ditto? And the same with her Ninetales? What if she's just screwing with you to make herself seem more powerful than she really is?