Daughter being threatened in kindergarten

My daughter started kindergarten and had an incident where a kid threatened to stab her in the face last month and my daughter reported it to a teacher and the school called me and spoke to both children and switched the other kid to a different class, so I felt like they handled it well enough. Now yesterday, my daughter tells me she had another little girl say she’s gonna smack her. She tells the teacher (a different one than her everyday teacher) the teacher basically gets upset at her and tells her to move her color down to a “bad color” as if she’s in trouble. They use a color system for poor behavior. So, I’m planning to call the principal and ask why the teacher handled it like that and caused my kid to feel as if she’s wrong for reporting that another kid threatened to smack her. My question is will it seem as if my child and I always have an issue with something and maybe I need to find ways to show her to let it go? I think when she was in daycare i reinforced that if anything happens to tell a teacher/grown up immediately so she has stuck to that. But she’s such a sweet kid like she calls everyone her friend and I hate for her to have to deal with kids making threatening remarks to her on her own without being able to tell someone. So any advice from moms who have had to deal with issues like this or just have a better idea on how to handle it. I’m thinking of moving her to another school but I know these things happen everywhere and we can’t switch schools every time it does.