Two care home staff worked to cover a night-shift gap as there was no emergency cover available.
Ms Bedford said after speaking to social services and the Care Council of Wales, it was agreed if staff felt well enough they could come in to work.
"It is also not feasible because we simply do not have enough care staff on our books to stretch that thinly, and the Caledonia is specialised for dementia care so staff here need to be trained in those highly specific skills," she added. "What's happened to me is frightening everybody - we fought so hard and kept Covid out of the homes, but a lot of homes have got it," she said.Anglesey council said in a statement: "Decisions in respect of emergency care provision at the Caledonia have been taken in the best interest of residents.
A spokesman said they had worked to identify shift cover until the weekend to ensure residents did not have to leave their home.The crisis rose just before Prime Minister Boris Johnson announced on TuesdayIn Wales, a proportion of the funds raised at a UK level will be allocated to spend on health and care services, expected to be about £700m by 2024-25.