Hi, I'm new!
2. I actually did not mind that Littlefinger got the Hound's lines. I think it is a nod to what happens in the future, with Littlefinger and Sansa at the Vale. After this, I don't think they interact much at all (but my memory is fuzzy - it's been a while since I read the books), what with Littlefinger trying to appear as disinterested in Sansa as possible. If we ever do get to Season 4 - it'll be nice for nonreaders to go back to Season 1, and see that Littlefinger did take a bit of an unusual vested interest in Sansa. It's nice that while Littlefinger did answer Arya's question and didn't ignore Arya persay, it's clear his attention is all focused on Sansa.
LF actually approaches her and starts the conversation with a creepy 'you must be her daughter' and a creepier stroke of her hair.
When Sansa finally looked up, a man was standing over her, staring. He was short, with a pointed beard and a silver streak in his hair, almost as old as her father. “You must be one of her daughters,” he said to her. He had grey-green eyes that did not smile when his mouth did. “You have the Tully look.”
“I’m Sansa Stark,” she said, ill at ease. The man wore a heavy cloak with a fur collar, fastened with a silver mockingbird, and he had the effortless manner of a high lord, but she did not know him. “I have not had the honor, my lord.”
Septa Mordane quickly took a hand. “Sweet child, this is Lord Petyr Baelish, of the king’s small council.”
“Your mother was my queen of beauty once,” the man said quietly. His breath smelled of mint. “You have her hair.” His fingers brushed against her cheek as he stroked one auburn lock. Quite abruptly he turned and walked away.