The Artist and the Attorney - Have Heart, Will Travel

Lucinda has got to stop painting her ex, but she can't summon even a sketch of anyone else - that is, until a stranger walks into the gallery one evening. Mel is running out of options. To get the evidence she needs in court, she's prepared to do pretty much anything. She's never posed for an artist before, but Lucinda needs a model, and Mel needs access to the gallery. If they're using each other, at least it's mutual and just the once.
What harm could one night possibly do?