I'm looking for an anti-Mel fic and I checked the tags but couldn't find it. What I remember is Lindsay left Mel and for revenge(?), Mel sues for custody of Gus. The thing is, she really knows nothing about Gus since she works all the time and it's Lindsay who did all the parenting. I remember a social worker made a surprise visit to Mel's house and Mel made excuses not to let her in. However, she peeked through the window and it was a mess. When Mel got the chance to spend a day with Gus, all she did was work and left him to play by himself. I believe Lindsay knew that would happen and even made a comment about spending an entire day with Gus would drive Mel nuts since she's not really parental; they knew Gus won't be in any real danger though. I think she even picked up a woman while ignoring Gus. Brian had hired a private investigator which is how they know all of that, and they used the evidence to fight her in court.

The may or may not be a sub-plot within a larger fic. Thanks for any help.

FOUND-While You Were Sleeping 2, Link in comments.