I've read a theory about what might happend to Ymir.
In chapter 75; page 5 and 6,([[1]]) you can see that the armored titan has claws.
Had he always had those?
In chapter 40; page 41,([[2]]) Ymir transforms into a titan for the first time and you can cleary see that she has those claws, too.
I think Reiner ate Ymir or was able to extract her spinal fluid.
If he ate her, she's dead. If he extracted her spinal fluid it's very possible that she's still alive.
I've been searching for some manga pages where his hands can be seen.
Here:
Panel 4 - in the moment he tries to push Eren away, his fingers can be seen - no claws.
[[3]]
Panel 2 - where Eren does this freaky thing with Reiner's arm/tears Reiner's arm off.
[[4]]
Of course, it could be that the claws are simply one of Reiner's hidden skills and I really hope that Ymir is safe and sound but I thinks it's some kind of suspicious that Reiner can suddenly climb up the walls.
Okay, maybe it only hadn't been necessary for Reiner to climb up there yet but..well...
Unfortunately, I can't answer your question but maybe you are interested in this little theory :')
So, let's look forward to the next chapters!
[Sorry, for my bad English (and for this off-topic comment). English isn't my first language but I hope you'll unterstand what I want to tell you :') ]
Some of the recent early translations going around of Chapter 77 suggest that Reiner and Bertolt let Ymir go off on her own way, but we haven't been told where she's gone. I hope she comes back soon ;~;.
Fredboink wrote: I wonder if she was killed and her powers given to another. Quadrupedal Titan perhaps?
No freaking way that happened! I'm sure Ymir is still around. Though her Titan form could be improved like Eren's had been. Give her some more height!
Sorry for the late reply but these are amazing theories!!! Ymir is my favorite characters in attack on titan so im really worried about her