It's important that your puppy be comfortable being alone, not just keeping to herself and playing, but actually being alone with no one in the house.
That being said, she is only 9 weeks old and has just been taken away from the only family she knows so it's a bit of a process.
This crate training sticky help quite a bit. It will also help with housetraining.
You should work up to longer periods of time with her being alone. The biggest thing is that you don't give in while she's whining. Set her up in her crate or playpen or puppy area, then step away (this might be just back a few steps or to another room, depends on the pup) When she starts to cry ignore her until she's silent for a few seconds, once she's quiet you can give her praise and a treat and then go again. As she gets better at recognizing that a calm quiet dog gets her what she wants you can up distance and duration of quiet time needed to get a treat.
That being said, she is only 9 weeks old and has just been taken away from the only family she knows so it's a bit of a process.
This crate training sticky help quite a bit. It will also help with housetraining.
You should work up to longer periods of time with her being alone. The biggest thing is that you don't give in while she's whining. Set her up in her crate or playpen or puppy area, then step away (this might be just back a few steps or to another room, depends on the pup) When she starts to cry ignore her until she's silent for a few seconds, once she's quiet you can give her praise and a treat and then go again. As she gets better at recognizing that a calm quiet dog gets her what she wants you can up distance and duration of quiet time needed to get a treat.