It would appear that your policy may not have a deductible (full or $0) or you have a "disappearing deductible" for your comprehensive coverage. Your friend's insurance policy had a $250 deductible or her policy doesn't have a disappearing deductible.

We are not aware of any Michigan state law requiring insurance companies to automatically waive a deductible when you hit a deer so while your friend could ask her insurance carrier if she can get it waived it will be up to the insurance company and its guidelines whether they will do so.