Personally I think that Timothy is a bit damaged from previous relationships and chose to lash out at someone who was already in the spotlight, that way she could get the most reactions out as possible.
But of course there is always that small chance that she is 100% telling the truth, and wether she is or isn't Melanie's career is very badly damaged. Let's just hope that this situation clears up soon and we can all get a long again without yelling at each other.