So I have this subordinate who just got her job back after she quit and is already getting on everyone's last nerve. She is lazy, ditsy, and slow. She shows up late and says she will take any shift but when asked to take a shift she says no. She didn't tell me she wasn't coming in to work on MY shift as my most important role but instead texted my boss who never received the "message". I learned from another subordinate that she wouldn't make it... 10 MINS AFTER HER SHIFT STARTED!!!! So should I tell her not to come in and serve her pink slip or should I send it via text since she loves to text so much.