as the title says please help, a little background needed,
i have 4.5 year old twin DD's who i love with all my heart me and DH adopted them when they were 11 months old and they have completed our family totally.
DD1 ( by 7 mins!) is really laid back, wonderfully well behaved, eager to help and a peasure to be around - most of the time 
DD2 is totally different from her sister but equally as wonderful, she is such a comedien (sp?) really loving and very artistic, however, she is really sensitive and highly strung, often throws strops in the hope of getting her own way - this never works! and will argue black is blue just for the sake of it.
we had a lovely morning in the park and out to dinner with my mum, they were both fab but as soon as we got home DD2 started niggling at her sister, taking her toys away and generally winding her up, in the end i decided to put her in time out at which point she told me she doesn't want to live here any more, i am ashamed to say that i opened the front door and said ok then off you go she made it as far as the gate before she turned around.
following time out i have been told that i am horrible, stupid when trying to help her with a game and that she is very cross with me and doesn't like me!
at tea time i asked her to please finish her water before getting down she said no i dont like it (she had already drunk half!) before pouring the remainder over the table 
please help me rise above this i am trying so hard to walk away and totally ignore her but she is really trying my patience.
twinmummy