PLEASE READ THE FOLLOWING

So yeah, my computer decided to crash on me, the problem is that it crashed while I was writing Chapter 4 and I was almost finished, now I'm only left with a small beginning part that is around 1.3k words and that is counting the massive authors note I put at the start, so it is nowhere near enough for me to proudly upload.
For reference I had reached around 5k words into the chapter, which is, without a doubt, the longest chapter I've written so far, and it is all gone.
I've lost motivation for a bit because of the crash, and I'll need a while to regain that motivation, so yeah, stick with me. I'll probably have it done sometime next week but that is just a guess.

For now I'll just answer some reviews! (These are from the authors note in Chapter 4 that I'm copy-pasting over, so there might be some contextual things that won't make sense.)

sadonion (Guest): "Really short chapter isn't it? love your rants for their lightheartedness."

Yeah, I'm trying to up the length of my chapters, I'm only now starting to plan what I NEED to get done in a chapter, so expect some longer chapters in the future. However this may come at the price of a slower update speed, so yeah.
I try to keep things as lighthearted as they can as long as it is not in the story, I'll tend to tone the lightheartedness down during Author's Notes if the chapter is really tense, brooding, or sad. If they are one of those three things I might even remove the author's notes altogether for the chapter so I don't break up the tense atmosphere with "LOL DARK SOULS NPCS ARE FUNNY XD" and stuff like that.
Also as for your guesses: No Comment other than one is right and another is close.

helkil: "I hope sif regains his size."

As I said in the first chapter, Sif's size is going to be toned down for storytelling reasons, there is no real explanation for her sudden size loss and there won't ever be, even though Sif acknowledges that she has shrunk, she's not the kind to ask questions that aren't important (she's the 'actions speak louder than words' kinda gal, particularly because she can't speak and can only communicate WITH actions, oh, and telepathic speech, never forget the telepathic speech).

mega float guest: "How could you do that to one of the onion bros!?"

Onion dad deserved it, he knows I can only play the game by ganking. Besides, I think he swiped my Covenant of Artorias, the sneaky onion man. Wait... didn't I kick him into the abyss? Well this isn't going to come back and bite me in the ass at all!

Artyom-Dreizehn: "What will you replace the staff of destruction and Warplane(Tarbes) with? With Siesta likely being related to the chosen undead(maybe) and has the sword that sif carries in the darkroot garden. With Sif here she will be limited with Greatsword armamnents maybe all throughout the story(not humanoid) as it would be ridiculous if you have Sif use a LAW against the Golem with her teeth."

Don't worry, I have everything planned out. Well, not everything but most things! The plane won't be making an appearance in the fic, but what replaces it will have quite an impact on the story, arguably moreso than the plane did. The Staff of Destruction is going to be replaced with a custom thing because Catalysts in Dark Souls don't tend to impact casted magic more than "Spells do more damage" or "Damage now scales with X rather than INT" so I'm having to come up with something to replace it. The only good thing that I've seen the SoD replaced with was the Dragonslayer Spear, but I want to be original and Sif wouldn't be the same if she was using a spear rather than a sword. Don't worry, my item ties in with Souls lore enough that I can confidently add it in, though it may be overpowered. So yeah, no LAW here. Sif's Greatsword of Artorias might make an appearance? But that would rend Derflinger useless other than for talking too. Oh yeah, Derf will be changed too, but won't be connected with the DS universe.

Sazq: "Quite an interesting premise so far. Although I always though of Sif as a male...o_0 I am interested to see how this story plays out, so keep up the good work. (I do think you are probably going a tad over bored in your author notes imo) your characterization is pretty spot on!"

Thanks! Yeah, that tends to happen when a character's gender is not outright stated, but the overwhelming majority said that she should be female (including myself). My authors note skits are a little zany but as stated in the top response I'll be toning down the ANs during tense situations. I put in the skits because I feel like I can implement Dark Souls humor where it is impossible to implement in the fanfiction itself.

BlazaWolf: "Was there a typo or did you actually mean to say that Flame was bigger than Sif? Sif being the size of a horse. I've only watched a season of the FoZ anime and read only a couple of chapters of the manga, but Flame is only as tall as a alligator that bothers to stand up. If Flame gets bigger later on in the series then that's fine, but only when it's later."

It wasn't a typo, I just scaled flame up, he is now slightly smaller than Sylphid (wings not included). I don't have much of a reason for scaling Flame up besides me thinking that he was always too small in canon.