My german homework no help on it but something more important! Thx ;)?

Kk i forgot to give my german hw in on tuesday and so did other people. My teacher said bring it tomorrow break or if w dont we wil get an after school detention' i had a test which is more important and its for maths so when i finished the test i went to my german room and she wasnt their! Then today i went at break to see if she was their right at the beginning no! I checked at lunch no! Even after school no! I saw her walk around like in 1 of my lessons so i knew she was in i even looked for her at lunch. So what do i tell her tomorrow because i know she wont believe this story because she is mean and i dont think i derserve and after school. I found the homework hard as she took in our books too! Hmm please tell me what i should tell her ive told my mum she said to tell tje teache what happened and i saod she doesnt believe people because shes a nasty witch noone likes and she thinks shes friendly, lol! Thx for the help :D