Possible Clues:

• Old woman wearing cosmetic? That's hard to digest!
• Food offered by witch wearing blusher?
• Coarse food
• Approximate amount of time that's not processed internally
• Diet in uncivilised times?
• Dietary fiber
• Fibre shown by witch in make-up
• Ugly woman wearing make-up shows fibre
• Rotten time for coarse food
• Refuse to give hard time