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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After a health scare, Nazanin Zaghari-Ratcliffe has been told by a specialist that lumps on her breasts are most likely not cancerous.
Holly has the forecast for tonight and tomorrow in the west of the region.
Holly has the forecast for tonight and tomorrow in the east of the region.