The Letter

She heard the letterbox clatter and then a light slap as the post fell to the mat in the hallway.
She went and retrieved her mail and returned to the kitchen table. There were four items. Three were adverts and one was a letter.
She looked at the envelope. It was hand-written in writing she didn't recognise and it was addressed to her.
She tore it open and noticed a peculiar sweet smell. Powder spilled from the envelope.
She dipped her finger into it and tasted it without thinking.
She slumped over the table, unconscious within seconds.