New Fiora and a simple build question

So I never bought Fiora because all I saw her as was a damage hose that clicked a couple buttons and either won or lost. Basically, thought she took very little mechanical skill. Since this rework came out, I bought her because she looks more mechanically advanced now and so she is.

So this brings me to the burning question. Her Q. To Trinity Force or not to Trinity Force.

It applies on hits. Also, it has a very low CD if you hit someone with it, something like 2.5 seconds. Is Tri Force a good item on her now? Or do you still want to just send your AD numbers soaring through the roof? I like the stacking MS of her passive and Tri Force, and I believe it gives a nice boost of damage, but idk if she needs such an expensive item. I feel like her actual damage scales a bit less with AD than it did previously so maybe it's a good item considering the damaging portion of her ult is independent of her AD, and the AD scaling on her Q is very poor. Her parry is an AP scaling (benefited) and her e is the only actual damage portion of her that greatly benefits from heavy AD (Two quick strike, crit guaranteed second strike). So far I'm thinking Tri Force gives Fiora's Q the damage it needs to be a much stronger ability considering it is spammable and also in general gives her a flurry of other stats. Any squishies she jumps on will die in a matter of a few hits because of true damage and her general burst but in more prolonged fights, she will use Q many more times so tri force really will come in handy. She doesn't seem like an auto attack steroid of a champ anymore but rather one that lunges around an enemy to strike these vitals.

Please let me know what you guys think.