I guess she wanted to get to the Lancelot's room sneaky using the key she has got. And she put on the socks as she wanted to look not so ladylike. But it's still not clear for me.
Explanation:
external, when he was walking down the road alone, while cars passing by without stopping to ask him if he needed help or anything
Do not waste your time looking that link up I tried looking my answer up and it said it was fake.
Answer:
<em>DEAR SIR/ DEAR MADAM YOURS FAITHFULLY </em>
<em>BRAINLY??</em>
<em>PLZ</em>
Explanation: