Filtered against evil, Moriarty, Loki
Since people seem to making it an issue, I'll lay it out for the people here.
Natasha and I come from after that Avengers movie, like a day or two after when Thor took Loki to Asgard. Meaning that yes, the Loki here isn't the one we know. But that doesn't change that the Loki we know use to be this Loki. So we're going to be wary. We're going to be untrusting of him. If you've seen that movie, you'll know why. And yes, we get that the Loki here isn't the Loki we know. It's going to take time though. But we're trying to give him a chance, alright? But it won't be easy on our part. Trust can't just be given.
So if you want to whine and moan at how unfair it is for us to not trust him straight aways, go right ahead. It's not going to change our opinion on the matter. Us trusting Loki is going to have to be earned.