A former building superintendent in Manhattan has been charged with stealing more than $350,000 from a 100-year-old tenant who lives in the co-op where she worked.

According to a court document from the Manhattan district attorney’s office, Rosalind Hernandez, 56, wrote large checks from the account of the tenant to two people he did not know, and used his cards to make purchases including lingerie, clothing and a subscription to an entrepreneurship training program for herself and her niece. Ms. Hernandez, who also lived in the building in Chelsea, had become the tenant’s confidante and had his power of attorney.