Kathrine stared at her mother and at what she was doing in mute shock, the moaning deep and hefty as she fingered herself. Feeling her own need for mastrubating returning she closed her eyes and willed it back, before she crawled to her mother. "Kara.. let me help you..", she said softly, she had done this with the other three as well. So as she reached out and trapped her mother's nipples between her fingers, starting to tweak them softly, it felt strangely comforting.