Foster Further

 Both girls have always bitten their nails. I haven't focused on it because I was hoping they'd grow out of it with time. And besides, who needs another battle?  The only thing I did was offer a reward. I'd paint their nails and have a fun "spa day" if their nails grew enough that I could see white on each fingernail. It's only happened twice in two years and only when I was doing lots of encouraging each day.  Recently, Kate brought up nail polish and our fun spa day (I'd been asking her what she wanted for her birthday). She, on her own, said she was going to stop biting her nails so she could get nail polish. I was excited that she wanted to take this step and have been encouraging her for the past few days.  Then, this morning, it was clear she'd bitten all her nails down to the quick. I was so disappointed for her. I asked her when she did it and she said, "in the morning time". I asked her why and she said, "because I thought they ...