The following quotation is from Anthony Trollope's The Small House at Allington:
We have retricked our beams in our own ways, and our lives have not been desolate. But for her you and her mother will look forward to see her married some day.
The unexpected occurrence of the words in bold puzzles me. I have been made aware that it should have been look forward to seeing but it seems that sometimes things are not all as we would have wished them to have been.
I wonder: why did the author choose it?