She wasn't surprised to hear his voice behind her. She had been lost in her thoughts, pondering the reasons behind Narcissa's request, but she had still heard the lock open on the front door. Given the means of entrance, she could only assume it was Draco. She didn't think either of his parents would be using the door, which was quite alright with her. She personally didn't want either of them to arrive and find her here...particularly when their son wasn't.
The soft blanket around her shoulders was a bit of a surprise. She hadn't noticed the cold. Perhaps it she had been too busy with her thoughts or perhaps she had simply spent too many winters in the dungeons of Hogwarts. Either way, she was grateful for his thought. To catch cold and have to cancel her meeting with Narcissa certainly wasn't an option.
"It's alright." she responded, leaning back into him with a small sigh. The entire time she'd spent out here she had not come up with a single sure fire idea as to why Narcissa wanted to speak with her...other than to simply talk, but she knew fair well that there was more to it than that. "I haven't been out here too long."