Student got in huge trouble over what they wrote on Google Classroom

She's a sweet English Language Learner. When she turned in a Google Doc this week, I noticed that she had written something like "this sucks" under the heading. She hasn't gotten in trouble in my class, and, even though I knew she wasn't familiar with the word, I knew she was copying what she'd heard someone else say. I privately emailed her and told her that the word had a very negative meaning, and asked her please not to use it in academic writing. I also reassured her that she wasn't in trouble.<br><br>One of my colleagues, also teaching the same grade, also saw her use that phrase in their Google Doc. My colleague wrote her up for "cyberbullying," which is an automatic detention. She didn't get a chance to explain that she hadn't meant to be mean.<br><br>She came to see me and apologized, and I explained that there had been a lot of miscommunication. I reassured her that she was not in trouble with me.<br><br>Then I went to my colleague and explained the situation. She was angry that the student hadn't been given a chance to explain herself, and was angry that I had let the student off the hook. I explained to my colleague that the punishment did not fit the crime, and that the student had apologized.<br><br>My colleague is still angry with me, which is no big deal, but the bigger issue is that the student is now scared to death of my colleague. I feel like I did the right thing, but at what cost?<br><br>&#x200B;<br><br>EDIT: I should have been clearer that the phrase she used was not aimed at a person. She wrote, "Week 4 assignment sucks," or something like that. She has never said anything mean to anyone, and everyone in class (students and teachers) likes her.