Whenever I saw someone lying on the floor it made me feel so scared.
Why does seeing her lying there scare you?
I don't want to do anything about it if she was murdered.
It is scary to see someone lying down lifeless. If you don't call 911 she might die if she is still alive. You can be the hero here and possibly save her life by making that call.
It's too late. She's dead and I saw nothing, I'm hiding my phone.
No! Trust me, you need to contact the authorities and let them know because if she does die and you were seen there, then they will be looking at you for murder as you could have prevented it and did nothing.