I need help crate training my pup?

i know hoe to crate train, but the thing is she already accosiates the crate with bad times from when my brother tried to train her but badly. everytime shes in her crate she will scream very loudly, and this will go on for hours, at night, mostly. sometimes i think she is hurt and run to go see if shes alright... show more i know hoe to crate train, but the thing is she already accosiates the crate with bad times from when my brother tried to train her but badly. everytime shes in her crate she will scream very loudly, and this will go on for hours, at night, mostly. sometimes i think she is hurt and run to go see if shes alright because one time she was chewing on the crate and got her muzzle stuck in it, she screamed so loudly i was so scared, now sometimes she will scream like that and i think she is hurt, so i let her out as a kind of impulse. i really need help i cant sleep and i am writing this in a time of need.
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