An Irish nanny in Quincy has been charged with injuring a baby girl in her care who then died according to Middlesex District Attorney Gerard T. Leone.

Aisling McCarthy Brady was arrested on a charge of assault and battery on a child, causing substantial bodily injury.

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The 34-year-old from Ireland is due to be arraigned in Cambridge District Court on Tuesday.

Leone told the Boston Herald: “This is an extremely troubling case, where we allege the defendant violently assaulted a 1-year-old child, causing a devastating head injury and broken bones.

“Children are our most vulnerable victims and where, as here, the offender has been entrusted with the care of a child who depends on them, the allegations are all the more egregious.”

The Boston Herald reports that Cambridge police went to an Ash Street address on the afternoon of Jan. 14, where they found the baby girl unresponsive, breathing but unconscious.

Neighbor Kristen Collins told the Herald Brady has lived in the building for five years and is originally from Ireland.

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She said Brady shares an apartment with her boyfriend and two dogs.

Collins said: “My heart breaks for that family. I can’t imagine what they’re going through.”

The report adds that the child was taken to Children’s Hospital in Boston, where doctors determined she was suffering from subdural and retinal hemorrhaging and cerebral swelling.

The DA’s office said she also had numerous bone fractures that were in the process of healing.

The child was pronounced brain dead on Jan 16 and subsequently died.

The DA’s office added that investigators determined that on Jan. 14, the infant was in the sole care of the nanny during the time when she apparently sustained injuries that prosecutors say are ‘consistent with abusive head trauma.’

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A listing on describes an ‘Aisling B.’ in Quincy, 34, as being ‘an Irish Girl One of Ten Kids’ with 10-plus years of experience and looking for full-time, but not live-in, work.

The profile says: “I’ve been babysitting since I was 13 for neighbors. I’ve been nannying in Boston now 10 years. I love what I do.

The profile lists her as ‘comfortable as a nanny for four-plus children’ of up to 6 years old, experienced as a nanny for twins and multiples but not experienced as a nanny for special-needs children.