So I just read the summary, there's grooming in it, is there?

I think you read it wrong. It what hell in the summary means a grooming to you? Do you even know what grooming means???

In short, no. There is no grooming so far, but she isn't necessarily an affectionate person, though knowing how these manga's go I'm sure that cold/aggressive approach will melt.

There is totally no grooming here. Coz grooming is from the very start you're raising the kid or befriending them with the intent to sexual abuse them.

You clearly don’t know what grooming means. Grooming is where you befriend a child with the intention of sexually abusing them.

If you read the story Anna clearly doesn’t want to befriend anyone or fuck children. Hell in the first chapter did you see the way she was holding the baby. Let’s not forget how she was gonna let him die by wolves. So no she is definitely not a groomer and this story doesn’t have any grooming.