Blah...you guys all suck. I hope you don't have daughters, the poor things are going to look like train wrecks in the pursuit of girlyness...
Pink does not go with Ruby Red! Neither does baby blue or purple! And paint matching fenders is not going to make it girly either. Unless she digs the paint matching, then totally lie to her and say that is girly. I'm not really a girly girl except that I love wearing dresses, but my suggestions are sparkly ruby red ford letters for the grill. Lighted side vents and interior accent lighting, red of course. Black (possibly sparkly) decals saying whatever she wants on the rocker panels. A sticker for the back window saying something about bad ass girls driving bad ass trucks or something girlyer, I'd have to look into that. Mirror reflector deletes if you haven't already, Orange = gross on the ruby. If she has the nav, something perfect for her for her screen background.
She could come up with a theme, like mine is little red riding hood, that may help in the quest to modify. She's always going to get people asking if that's her husbands truck, even with girly accents, because men are oblivious and either wouldn't notice or wouldn't connect the dots... She just needs to own it and take pleasure in hurting their manhood by saying, no that's my truck!