idk where you got ohio from
I always had that doubt, if Chell was put into stasis when she was 8, she is a person of 20 years old with the mentality of 8?
Perhaps there are two sorts of stasis? That is, she was in regular stasis before portal 1, which left her ageing normally, but wasnt she in a long term relaxation vault or something (cant remember the exact phrasing) between portal1 and portal 2? this would at least explain how she hasnt really aged between 1 and 2. I guess this could even make sense of wheatleys comment about mental deterioration, perhaps only long term stasis does this and the other kind doesnt?
Of course, this is all just baseless speculation, but still.
See, this is why game writers have an easy job. They can come up with any complete mess of a plot, and fans will still try their hardest to make sense of it and fill in the gaps. With Portal's universe I'm not even sure what to consider canon or not.
This next part might be complete garbage, but how come the letters that have fallen off of her project are N E U... the first three letters of neurotoxin... Hmm...