I've been with my current team of teachers for two years now (this is my seventh year at my school). I've really enjoyed working with the other GenEd teacher who was placed in the team the same time I was, and our SpEd counterparts are amazing. This year, a third teacher joined our team because the year-long program was expanded. She's new to teaching after years as an accountant, and I think she is going out of her way to take shots at me. Our group has always been great about sharing teaching material, but now mine gets a ton of criticism and "tweaking" from her. If I adapt a PowerPoint she has already used, I don't show off what I found lacking. Last week, I let the team know I was adapting all of the novel we're reading to Whiteboard pages so my students could read aloud and along in live sessions. For some reason, she had to write back, "Thanks for your effort! Don’t feel like you have to do this for me; I just don’t use the whiteboards for a couple of reasons. I don’t know how to manipulate once they are in collaborate, and I like to add questions on my slides to scaffold the reading." First of all, I'm doing this for my OWN students, not for her benefit. Second, adding images to the whiteboards is pretty easy, especially if you use the tutorials. Third, I swear she's hinting that I am not scaffolding. I just happen to do so verbally AND with visuals according to the needs of the students who are working with me. When I shared this email with my SpEd counterpart, she wrote back, "Wow! Is she that much of an 'it's all about me' person?!? Yikes." At least I'm not the only one seeing this behavior. The problem is, I'm not sure how to handle this. I'm technically no longer the team leader because we've switched to Teacher Based Teams. I have no authority to confront this behavior, and it seems too petty to bring up with my supervisor or principal. I also don't want to completely cut out sharing material, especially with my original teammate (who has seen what is going on and sends me a LOT of encouraging emails). Suggestions?