Honestly, there's not much she can do for him. I mean, all she can do is see them. She had to rely on others constantly to "get rid" of the malicious spirits around her.
Fingers crossed, I'm one to hope that this guy will help her become more proactive in her own self defense, even if Rom doesn't agree with this guy's methods.
Miko can see things that nobody else can. Well, bad things nobody else can. I don't think she's ever seen one of those shining white protective spirits. If he had heard something about that, he might want to use her as a spotter or scout. Knowing what's going on is very important to him, he's created a whole network of suit-men to be his eyes and ears, having an actual person who might even be able to see more than he can would be the kind of asset he'd be
very interested in.
He's got leverage, too, if he wants to use it. Her dad. He knows her dad's a ghost. This could just be about that, too, but I can see this negotiation going many different ways. We also might find out that
his blood isn't special, but that cutting himself is just part of a technique anyone can learn, or even that blood itself is damaging to ghosts, giving him even more he can offer her.
I've found him very interesting as an antagonist so far. He's kind to people who aren't Romm, and his problem with Romm appears to be how risky his methods are and how he's soft to these very dangerous beings. He sees the supernatural as enemies to all that live, and nature seems to embrace him. He seems unaware of the shining guardian sprits that the Godmother sees, or at least those never came up yet, and he has a very straightforward and powerful set of abilities that are totally different than Romm's hermeticism and the Godmother's ritualism. So far, he's the only person who seems to know what he's
doing around these things, because he can create suit dudes and just straight up destroy spirits.
