[quote=@Skyrte]
<Snipped quote by mattmanganon>

It seems like your character is just all over the place. I see Psyker, Anti-Tank, CQC, and Anti-Infantry. Pick one or two.
And it's extremely unlikely for the Eldar to just gift you a Biting Blade, and a Fusion Pistol. Especially only after one favor, even if it was saving the life of said Eldar. Even if you somehow got said weapons, your character being raised by the Mechanicus + Using Xeno-Tech doesn't go well together. The vast majority of the Mechanicus would probably call it techno-heresy of some sort.
To me, your character just seems too powerful. If a tank shows up, no problem, you have a Fusion Pistol to blast it with. Chaos Marine? Plasma bolt to the chest would do. Any sort of infantry? Your Biting Blade would make short work of them, and if they're too far away, you'd just Biomancy them to death. Hell, you could probably biomancy a tank crew to death.
I'm not much for game-mechanics and such, seeing how this is a freeform RP. If this were a legitimate Dark Heresy campaign, where everyone is using rules and stuff, I'd be more accepting of some of this stuff, but we're not.
[/quote]

Actually, she's supposed to be fully Anti-Tank. The Biting Blade is large and unweildly, hitting anything faster than slow moving, Heavy infantry is going to be difficult, the Biomancy is for the purpose of granting her the extra strength necessary to cut through tank armour. Taking out simple Heretics will be difficult, like trying to swat a fly with a hammer. Just take the tabletop game for example. You charge a Sisters Repentia squad into a Dreadnought, they will make short work of it. You charge them into a squad of Guardsmen, the Guardsmen will actually, probably, win. They hit on 4's and wound on 4's, no saves. Plus, because the Repentia have Unweildly, about half of them will be gone before they even get to attack.

And it is not unheard of for the Eldar to gift humans their weaponry, generally done after saving their life. Eldar take Life Debts VERY seriously, from what i have read.

As for her philosophy, she was completely into the "Human Only" stuff, until she was taken by her Inquisitor. He taught her a philosophy that she has kept until this day. "The reason Aliens have Technology, is because the Great Machine God wants us to have it. But he is not into giving us everything we want straight away, we would grow weak and supple. He wants us to grow strong enough to be able to take it from them. One day, we will be able to shape the wraithbone, but not until we grow strong enough to take the technology from the Eldar. But, that is not our destiny. Ours is to rid the universe of the vile Warp Spawn."

As such, she has no qualms with using Xeno technology, if it is used to take care of Daemons. Now that you mention it, yes, the Plasma Pistol is a little too much. But, for the moment, she is dedicated to taking down the big, heavy targets. She will lead the fast-moving ones to the others.