Dog Training Questions

Thomas asks…How to train an miniature pinscher to stay inside her house dog at night?I recently got a minpin. she's 4 months old. I live here in the Phil so it's not a very cold weather. I'm trying to get her used inside her house dog, but whenever I close the house dog's door, she keeps on crying. My aunt told me to live her alone and let her get used to it. But she keeps on crying the whole night :( What should I do? I already gave her water, food, towel, and a chewing toy inside the house

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