I lead my team at work, but not in an official sense - the head of dept does so officially but doesn't have time so asked me to fill in. It can be a little awkward as I do the supervisory/admin stuff on top of a full workload, but I accepted it and to be honest wanted extra responsibility. My team are generally OK with it to be honest.
However I work with another team manager who has taken umbrage at me. Before she stepped into her role, her job also involved managing my team - the head of dept took my team away from the previous manager well before she even applied for the role.
Even before she got this manager post, the lady was pretty ... well ... moany. She's quite thin skinned and can get quite defensive and is prone to ranty outbursts. I find myself having to really be careful with her - I can't email her without going round to speak to her directly to make sure she hasn't read things the wrong way. Our manager is out of the office a lot so I do have to deal with her directly - to be honest I wouldn't want to have to do otherwise - but I do find that I get brushed off or find her annoyed with me.
Now I know some of this is down to me. I'm a lot older with a lot of technical experience which she doesn't have (and doesn't need to manage her team). I love sharing knowlege, both ways, but forget that she doesn't want anyone telling her ... have you tried etc? I'm sure that she thinks I'm patronising and probably quite uppity. However I do need to learn to work with her and I feel quite sad that I'm constantly rubbing her up the wrong way. I seem to be constantly apologising for my existance.
I've spoken to our manager about some of the issues, off the record. e.g. I have recommended mentoring, which I know will be on the cards sometime soon. However, she does seem to have an issue with me personally, and I'd like some advice on how to deal with it. I'm not looking for employment law advice, or how to raise a greivance etc, but how to learn to diffuse or othwise deal with the prickliness.