We're both new in our jobs, she's newer but only by a few weeks. My colleague gives her opinion ALL the time even when nobody asked her and I think that's bringing the mood down. She has already been told off about this as she annoyed someone fairly higher up but my manager brushed it off. It also annoys me at times (for example yesterday my manager asked for a report, I asked for clarification but my colleague decided to answer before our manager, it turns out I was right, but no need to interrupt the flow). I think her attitude is to the detriment of our department/roles but I really don't know if this should be put forward to my manager.