Dogs don't get along...help

[boricuajenny5]

I have a 3 1/2 year old poodle mix (Amaya) with severe seperation anxiety. I recently moved from my parents house and she was left alone while I am at work. I read through Pet Talk and found that my options were to put her in day care or get another dog to keep her company. I don't have a day care nearby so I opted for the other dog. I got a 2 month old poodle mix. This solved the initial problem where Amaya was having "accidents" around the house when left alone. This is something she doesnt do when someone is home. She was also tearing up my clothes. Amaya immediately stopped having accidents around the house when the puppy was brought in. She hasnt had an accident since the puppy has been here.

The problem now is that she has begun to attack the puppy when he gets too close to her. She begins with a growl then lunges but doesnt actually bite. If she does its a small nip. She was very curious about the puppy on the first day but now she wants nothing to do with him.

My mom recently got a very playful poodle puppy and Amaya loves to play with him then simply gets away from him when she doesnt want to play anymore. Why is she different with this puppy? He doesnt have half the energy as my mom's puppy which I thought she would be happier about.

What can I do to help them get along? The puppy is now terrified of her and walks the other way when he sees her coming. Amaya is always fed first and still gets her alone time with me. I have not treated her differently. I have recently started putting her in the basement for a couple of seconds whenever she growls at the puppy. I'm am using it as a "Sin Bin".

Thank you in advance PT.