SPOILERS. SPOILERS. SPOILERS.
Helen is clearly a murderess. There’s even a challenge completed if you incinerate her in her mortuary-style oven in the basement.
The thing is -can she help 47? She’s baking and baking, and searching for sedatives and possibly poisons in her Storeroom of Death - is there any way to make her deliver some tampered muffins to, at minimum, that realtor? I doubt she’d take out Janus, but can she be used at all, except as a way to get poisons in-level?
Fascinating NPC, either way, IO! She’s got lots of potential use or backstory, I’m sure, for expansion material.