twin attention deficit (atd)???

hi,
My six year old daughter has become very moody especially in the mornings.  She is a very happy kindergarten student doing well but has issues with her 3 year old twin sisters who adore her and try and play with her.  She refuses to play with both at times and when she does interact with them, she ends up bossing and directing them. ...
No matter how much individual time both my husband and I give her or  how much we reiterate that we don't have any favourites and love her and her sisters the same, she still becomes angry when she sees one of us especially me dressing or helping her sisters.  I know that she is suffering from sibling rivalry but when she says things like:-
("You like my sisters better than me" or "You don't like me - nobody does!") ,to me only,  I cannot help but feel like this could lead to  bigger problems in the future.
Any tips on how I can lift her mood in the mornings or prevent her from accusing us of not 'liking' her?

[specialmom]

well, I think I would just try to listen to her and tell her that you undestand.  It IS hard being the big sister.  She's dealing with lots of transitional stuff right now (and I'm so glad she is doing well)---  going off to  kindergarten while fun isn't easy.  She probably pictures you playing with her sisters all day long while she is gone and it makes her a little sad.  So I would let her talk about her feelings about this and maybe work with HER to come up with some ideas that might make her feel better.

Also make a HUGE big deal about the things she gets to do that the twins don't----  let her stay up a little later, for example.  Some older child privaleges that the twins won't get might make her feel like being older is actually cool.

Lastly, on a Saturday or Sunday have an "opposites day"----  make the twins the big girls and her the baby.  See what she does.  It's can be fun to mix things up at home once in a while.  (this probably sounds kooky to you, but we had an opposites day this past summer that my kids LOVED----  we at dinner for breakfast and breakfast for dinner, we wore out pjs during the day, etc.  they thought it all was hilarious.)

Ask her to show the twins how to get dressed (which at 3 they are ready to start doing anyway.).  Make her their teacher.  
Good luck!!