"Hmm? Oh, just out of politeness, I suppose," Sarah Jane said. "If you feel more comfortable using it, please do."
"Then lets head that way," Sarah agreed, falling into step behind GLaDOS. The woman was walking oddly. She hoped it wasn't frostbite setting in. She started to ask if the other woman was all right, when GLaDOS stopped and looked at her ankles. Sarah gasped. "What's happened to you?" she asked. "Let's hope there's a doctor somewhere nearby who can see to that. Are you okay to walk?"
GLaDOS's question threw Sarah slightly off track. "Ealing, London," she replied automatically. "What about you?"