Charlie had grinned at Cathy's opinion of the drink, and pointed at one that she liked, nodding and giving a thumbs-up sign to show that it was a good one.
When Ron approached, she waved back and tapped the empty chair at the table for him to sit at. Now that they were both there, she held up one finger in a 'one moment' gesture. A quick root through her purse, and she handed to each of them a set of the sign language books Heidi had been clever enough to distribute. Charlie had already memorized all the signs the books contained on her first read through, and now, she tapped herself and signed out, letter by letter, "C-H-A-R-L-I-E."