I play her with trinity since release.
She has a good base ad for an adc, and with some cdr her Q goes down to 1.5 sec, so you can abuse the spellblade proc perfectly well.
She is meant to kite and chase, and the mobillity from trinity really adds up here, it is nearly impossible to run from her and most melees have no chance to ever reach her(sounds like kallista...)
and whie she has not much manaproblems, mana still isn't wasted on her so only the 30 ap are wasted, but those mostly are wasted on many trinity users.
Compared to the usualy botrk+PD, you lack in dps vs tanks, but your increased mobillity and higher burst allows to flank and take out squishys, and you can comensate the lower dps by improved kiteing.
I find it to be more effecktive than the usuall built if i don't have alot peeling for me in teamfights or plan on splitpushing.