Shepard, stuck at a lower elevation and without an easy view, tests the strength of the wall and gives it up for a bad idea. She's still backtracking uselessly when he calls out the situation; she's still not excited about picking her way along the route he'd taken, or at least not excited about spraining something, but hell. What else is there? He can't hold and crawl.

"Looks unstable," She says, when she's close enough for a view. You wouldn't think ten meters could be such a distance, but here they were, "But it looks good for a target location."

It's a small gap; if it'll hold together, she can lift again, and try to enlarge the passage as well as hold up the ceiling. But if it's too unstable, and the shattered corner that's currently blocking their access fragments, she won't be able to keep hold of so many disparate pieces. For all her power and expertise, she was still just a Vanguard, after all, and a human one at that.

In which case, the alternative was obvious: she was a lot smaller than him, and she could bring her own light. But he was closer to the problem, and so...

"Reccomendation? You've got eyes-on."