Here's a clue...
Drogheda Independent 19 August 1905
Mrs Margaret Martin "sought admission to the hospitality of the workhouse" (I bet she wasn't laughing like these tabloid journalists
).
Then it was the usual things about Margaret not being supported by her husband.
The useful bit is that Margaret often lived with her sister, Bridget Donnelly (1897 marriage witness?). Bridget Donnelly is described as "and family", so I don't know if she had children too though single. She and her family were also in and out of B W/H, but perhaps there's a chance they were together on a census?