reverend jonno williams says funeral of teacher to be held on wednesday .
he will be speaking with the family this afternoon to finalise the details .
reverend williams says it 'll be especially hard for the town 's young people .
` she was a very friendly and cheerful girl , ' reverend williams says .
nsw health spokeswoman says ms scott 's body is still undergoing tests .
school cleaner vincent stanford , 24 , has been charged with her murder .