The 29-year-old said the hair, believed to be part of the cow's hide, had come from a £3 packet of frozen mince bought at Iceland's Gosport store.
Ms Stock said Iceland had investigated and given her £30 in vouchers as an apology.
It's completely traumatised her now. She was in buckets of tears. She was enjoying it until she found that and burst out crying.
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Thursday afternoon's weather for the west of the region
Thursday afternoon's weather for the east of the region
The Bishop of Rochester has set up the independent panel to look into allegations of child abuse at Kendall House in Gravesend