In the next chapter of my book my hamster Bella accidentally combined (nearly) equal amounts of unevaporated fumarate with unevaporated acetate in the same jar,(I'll spare you the details of how she got to this point and made this error, unelss needed)
and is currently at a loss of how to proceed. From what she's aware of there's two totally different routes of freebasing for both acetate and fumerate. Is there any hope of seperateing the two? Is there any other way of recovering the fruits of her labor?

Thank you kind souls in advance.

You don't need to SWIM here. Watch:
I consume prodigious doses of hallucinogens!
See, nothing happened

Anyway. If it was DMT bifumarate [the one that will actually make crystals from water] then technically, yes, separating them may be possible. But certainly not worth it.
Acetate and fumarate are freebased the same way. A base stronger than DMT is introduced and the DMT is taken up into a solvent that either A) it is very poorly soluble in at low temperatures and its crystallized in the freezer, or B) the solvent is evaporated, leaving DMT goo.

Either basing tek you found, assuming it works as written, will also work for the other salt unless something is very strange about it.

I'm sure Bella appriciates the sentiment but she has a PH.D in paranoia and wrote her thesis on CYOA. :3

So if this is understood correctly, if the mixture is evaporated, then mixed with sodium carbonate, moistned, spread out, and manually crystalized, the end result should be freebase?

Not certain if this is relevant, but the acetate was pulled with sunflower oil and the fumarate was pulled with limonene.

Thank you again friend!

Not quite. After drying the carbonate paste, some kind of non-polar(ish) solvent, such as, well, anything that dissolves DMT and not sodium carbonate, needs to be used to dissolve the freebase. The solution is then separated from the sod.carb. and a couple more pulls can be made on the sod.carb. using fresh solvent each time. All the pulls can be combined and a second round of evaporation will provide the freebase as goo, unless you try using naphtha and freeze precipitate from the solution instead.

I suppose my greeness is showing, I'm a bit confused.

Bella's only experience freebasing thus far was folliwng Amor Fati's tek
and the method outlined therein. She thought the point of freebasing was
to render it in a more smokeable form(as in, not goo?) and there is no
nonpolar solvent or additonal pulls listed in this method. Has she skipped some nessisary step?

Perhaps it is worth mentioning how she got to this point. She followed
Amor Fati's Tek, and had just finished her third limo pull, combined it with FASW
and then siphoned off the fumarate into a seperate jar. She realized she had leftover
bark in the freezer, was running low on limo, so decided to pull the leftover
with sunflower oil. She could not find any information about combining
sunflower oil with FASW, so used white vinegar to seperate it. It was at this point she
unintentionally siphoned the acetate layer out into the jar containing the fumarate.

Sorry for not being more concise in the first post.

You're over-mystifying the process. The DMT gets pulled from the NPS (in this case, sunflower oil or limo) into the acid solution. By allowing this solution to evaporate vaguely solid DMT salts (acetate and/or fumarate) will be recovered.

Store the salts or process them to yield freebase, the choice is yours. If you want only acetate, or only fumarate, the best thing to do is recover the freebase and combine it with a fresh amount of the acid of your choice, presumably fumaric.

Read up on the fundamentals of extraction:
DMT Extraction Overview

Understanding the principles behind how an extraction works is far more useful than simply following the recipe.

Been lurking at this place for almost a year and somehow managed to miss this gem.
Thank you friend. Will be reporting back with results.