Less than 5 hours of having their dog, OP received an avalanche of photos from her SIL documenting how well their dog was adapting to her house
Next, she asked OP's husband, her brother, if she can buy their Pomeranian from them
OP's husband immediately said no
He said that he may have joked about hating the dog but he actually adores her. She is a well-behaved and loving pet.
OP's SIL reasoned that she needed the dog more than they did and since they have a baby on the way, they will be too busy to take care of the dog.
She also told OP that her kids and her sugar gliders should be enough to make OP happy even without the dog
OP and her husband got their dog back despite her SIL's tactics to hold them off
Here's OP's adorable fluffly Pomeranian
Her exotic sugar gliders
... and another one
OP received a bit of criticism over owning sugar gliders and she admitted to her ignorance when she first got them
OP says she has no plans to get more sugar gliders but she will absolutely make sure that the ones she already has will continue to live the best quality of life
Why is it necessary for her to have OP's dog specifically?
She can choose to adopt a dog from any shelter or buy one from a reputable breeder
But wanting to buy OP's dog could be her way of punishing OP for having everything she couldn't have
She has no basis to say that OP can't handle having a dog while taking care of her children
How can you even say something like "I deserve to have your dog more than you do" with a straight face?
I wonder what gives people this much confidence?
Don't be the kind of person who feels so entitled that they assault strangers at a store to demand what they want
It's like asking OP to sell her baby — dogs are a part of the family
OP's heart is big enough to love both her children and pets
OP's SIL needs help from professionals to deal with her grief. She doesn't need to poach OP's family dog from her.
Dogs bring up a lot of emotion for a lot of people. What OP's SIL did was a crass overstepping of boundaries.
Her grief doesn't give her the right to demand another person's pet simply because she feels that she deserves it more. OP shouldn't feel any guilt about how the situation unfolded because none of it is her fault.