Um, there's one glaring problem here.

[quote]Despite not possessing magical capacity, her affinity is for bullets. Having been chosen as a Master and not possessing any magical capabilities, her Servant would be hindered because of her lacking in that department, suffering a deduction to their stats, although the specifics are not certain.[/quote]

'Despite not possessing magical capacity'.

If that's the case, she can't [i]be[/i] a Master. It takes mana to perform the summoning, mana to sustain the Servant, and mana for the Servant to act. Having no mana at all is more than a rank down, it's basically saying that if you're partnered with the detective, you don't have a snowball's chance in hell. Improper summoning can mess with ranks (Shirou) and classes (Gilles and Ryuunosuke), but lack of mana doesn't weaken the Servant, it just stops them entirely.

I mean, you can have no knowledge of magecraft and unremarkable Circuits, but you can't have no magical potential at all.* @_@

*Strictly speaking, this is inaccurate, but you'd still need magic to summon the Servant and would basically be powering them through human sacrifice.