[Even if someone heard them coming, they'd have the literal jump on whoever was on the other side of the wall as well as the cover of the trees (and projectile apples?) so Lenka's not too worried about the unknown. Nothing about this venture is particularly safe, which has the converse effect of making it less daunting now that they've come this far.

This part, at least -- this part they both can do. Nevertheless, Lenka pauses once Jaune is up and checks that the coast is clear on his end of the wall, then:]

Can you see into the orchard? Be careful.

[Regardless of advantage, they're vulnerable to all kinds of ambush right now and it's just best to check. He'll hoist the shovel up if and once Jaune gives the all-clear.]