Struggling with a really negative colleague. We have the same manager, and I am in a more senior role than her but I do not directly line manage her. It's a busy time at work, 2 weeks out from our annual big event.
You'd think nobody has worked harder than her, more hours than her, or done more than her. Multiple times, our shared manager has remarked to me that she has been reluctant to take work on and that she is negative, and that we should find ways for me to be able to delegate work to her (as my workload is high). I said that she is often reluctant towards this as she's very aware that I do not line manage her. My boss' response was 'don't worry, she's got the same attitude with everyone'.
I tend to largely get on with my own work and ignore her moaning. We generally work well together, but she happened to snap at me in front of our shared manager today when I pointed out something to be changed in the final draft that I, fully admittedly, had put in. She said 'I need you to ensure everything you send me is clean because I am too busy for this'. I ignored it, because quite frankly, we're all busy and in a mad pre-event rush. My boss also said nothing.
But I just feel like this is a growing problem and I'm not quite sure how to address it. I've been assisting more and more of her work, which I am happy to do because I am in a more senior role and I am able to finish things quicker - both my side and also for my boss, who tends to have less rounds of feedback for me and trusts more of the process in my hands. Still... has anyone dealt with a colleague like this?