A child who was reported missing in 2019 when she was 4 years old was found hidden a wooden staircase with her non-custodial mother, in a home officials had visited several times while investigating her disappearance, authorities said Tuesday.A child who was reported missing in 2019 when she was 4 years old was found hidden a wooden staircase with her non-custodial mother, in a home officials had visited several times while investigating her disappearance, authorities said Tuesday.