For those of you who don't know, I am a youth worker, working in an area based centre with young people from a deprived background.
Mneh...returned to work today after a holiday to find out that my boss has taken my healthy cooking group off me and made the new girl (who I hate), the lead person for it. He says it wasn't a reflection on me or anything, he just feels she needs a group that is her own so she feels more involved. My nose is seriously out of joint about it. I have been working with that group for a year and a half. Plus she already has a group of her own, and muscles in on mine ALL the time, questioning absolutely EVERYTHING I do, every decision I make. She is far less experienced than I am yet she thinks she knows it all, and steps on my toes a lot.

We work in a very small team, so I don't want to cause any trouble, so I told my boss I was kinda ok with it but reminded him to watch her because she isn't backwards in coming forwards to muscle in on other people's assignments. He said he knew this but I'm not sure he does...she makes out to him she isn't confident (which maybe she isn't) but this comes out like she knows everything. She isn't even sticking to the healthy eating policy and was buying cakes for the kids to decorate...where we should be teaching them how to make them so they are better for them. I feel like all the work i've put in the past 18 months was for nothing, all my decisions have been taken away from me, and I think she is actually loving it!

I had to step in today because she didn't know how to make the soup. As far as I'm concerned if she is lead worker, she is on her own, I refuse to prop her up in any way!!
I'm really unhappy at work. I used to love it here. Hell, even Brian (the guy i had trouble with before), and I have developed a way of understanding each other and we get on brilliantly now. But since she started, I have been forced to work mostly with her, and she treats me like an idiot, muscling in on my groups, and forgetting that as the lead worker, I make the decisions. I can't really go to my boss because he would be raging if he had to play referee, though I know he would if he had to. I just feel that I've had to bend over backwards to accommodate her. I also don't trust her, I know she would stab me in the back at the first opportunity. She isn't even all that good at her job, she is either acting stupid mostly with the kids, during MY groups, when I am trying to engage them into doing something constructive, or she is shouting at them!

There is never a happy medium!
Sigh!
I note that I come across as rather immature in this post...but I'm not the only one who has this problem with her!
Any coping strategies would be much appreciated. I know they way of dealing with Brian when she annoys me is to be harsh and tell him in no uncertain terms to $%!& OFF @). He appreciates this direct approach and responds to it by apologising for being annoying, and then we are laughing again. Unfortunately this approach can't work with everyone, and I can't see a way of dealing with her because the second I ask her to back off, even in the gentlest way, I know she will be running straight to my boss accusing me of bullying her!
She seems to think that blaming everything on her depression gets her away with everything!