Yet another a part of Circular Staircase, by Mary Rinehart:
"Not out in the hall!" she gasped; "Oh, Miss Rachel, not out in the hall!" trying to hold me back. But I am a large woman and Liddy is small. We got to the door, somehow, and Liddy held a brass andiron, which it was all she could do to lift, let alone brain anybody with. I listened, and, hearing nothing, opened the door a little and peered into the hall.
Are any words omitted in the sentence that includes let alone brain anybody with? Something looks missing from this sentence.