This is exactly the reason why I want to avoid voting for either Inf or Arelic. I do think Inffy's claims look more legit than Arelic's claims but there's still a lot of unknown variables. Whereas it's possible that there is a lyncher, I am not sure how realistic it is. On the other hand, it's very unlikely that Inffy/Tammy just randomly targets Arelic/Bird Person on the first night.
Now I think there are 2 options IMO:
1. Inffy makes a full claim of his role and explains all of his thoughts so that we actually trust him completely.
2. Don't lynch Inffy or Arelic today. In the night nobody should try to cure Arelic. If she doesn't die then we know she was lying and can lynch her tomorrow. If she does die, well, then we achieve what we wanted today with lynch vote and we avoid the Inffy could be lyncher problem.