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					Originally Posted by  Jkpal     unfortunately I am a softie and always give in to her...   I would think they spoilt her then could not cope with her demands..      Umm...Sounds kinda like what you're doing at this time, yes?  Lexi is just being herself; she's her own dog and she's in your life for a reason.  Celebrate and enjoy the differences between her and Elliemae, try not to compare.  And at those times when Lexi is being ridiculously adorable and you're feeling calm and patient, try to implement a little training.  Baby steps and deep breaths don't hesitate to ask for help!      |  
 
  I'd agree with 
Jkpal. Try not to be a softie and give in, if you don't like how she begs for your food. If you give in, you're fueling her motive to beg... they're smart creatures.  
Putting her in another room probably wouldn't solve your food begging problem. The barking in an isolated room sounds pretty normal to me 

 I wouldn't like it either if I were her lol... 
And yes! Try not to compare. All dogs, like people, have different personalities. Celebrating their differences is such a good way to think about it.