Looking for a story: family matriarch is corrupted by chemicals

The story I'm looking for has two parts and has the following elements:
- The family matriarch is in a fire that kills her husband
- Chemicals are released that corrupt her into deciding that only her family
members can satisfy her.

The story was unfortunately never completed that I'm aware of.

The story is "Sexual Liberation Through Chemistry" by Justaguy2:

http://www.literotica.com/s/sexual-liberation-through-chemistry

Found the story

After moving the story request to the proper forum, I tried a different way to
search for it; found it right away. The story is "Sexual Liberation Through Chemistry" by Justaguy2:

http://www.literotica.com/s/sexual-liberation-through-chemistry