Sentence:  A poor Irish Widow […] went forth with her three children, bare of all resource, to solicit help from the Charitable Establishments of that City. At this Charitable Establishment and then at that she was refused; referred from one to the other, helped by none; — till she had exhausted them all; till her strength and heart <WSD>failed</WSD> her: she sank down in typhus-fever […] 
Meaning of the word marked with <WSD> tags:  To be wanting to, to be insufficient for, to disappoint, to desert.