She could have stopped to respond to him, but she decided against it. Instead she just made the sounds to give him a little extra pleasure, the vibratory stimulation to go with the friction her lips were producing for him. As his hand caressed her back, she lowered herself further, further, until she felt all of him in her mouth, the tip of his cock hitting the back of her throat, causing her to open wider.
Every action, every movement, she was timing it down to the second so she knew exactly when it would happen, so that she could lift her head right as they arrived at the hotel and give a big gulp and a smile when the valet came up to take the keys. Yes she was earning tonight, and she planned on making sure no one forgot it.
Having to come up for air, she finally released him and came up gasping, letting her hand take over for a second while she recovered. "Glad you like it. Think you can hang on a bit longer?" She didn't wait for a response, she just went at it again, increasing her speed. She didn't have to worry about that. He would.