Anti-coagulant = Rat Poison
Well, it will do her in, or she might thrive on it!
My dad once set out a large tray of Warfarin for this big mama rat. She ate at least three trays full before she quit. Never did find her. Did have a smell from under the house later.
Just so you know, the disposal of the drug containers that Warfarin and its generic, Coumadin, are dispensed in are considered hazardous waste. They require hazardous waste management.