Perceiving it vain to argue against her insanity, I was planning how I could reach something to wrap about her, without quitting my hold of herself (for I could not trust her alone by the gaping lattice), when, to my consternation, I heard the rattle of the door-handle, and Mr. Linton entered. 
Perceiving it vain to argue against her insanity, I was planning how to wrap something around her, without letting go of her (for I could not trust her alone by the gaping window), when, to my consternation, Mr. Linton entered. 