Might it not be simply as his accessory after the fact?
If only I could believe this! If my knowledge of him and of her would allow me to hug this forlorn hope, and behold, in this shock to her brain, and in her look and attitude on leaving the club-house, only a sister's horror at a wilful brother's crime! But one fact stood in the way of this--a fact which nothing but some predetermined, underhanded purpose on her part could explain.

She had gone in disguise to The Whispering Pines, and she had returned home in the same suspicious fashion.

The wearing of her brother's hat and coat over her own womanly garments was no freak.

There had been purpose in it--a purpose which demanded secrecy.

That Adelaide should have accompanied her under these circumstances was a mystery.