What about the brain damage her tumor is causing?

Jim Glennie (A-1367) had a glioblastoma multiforme, and cryoprotective perfusion achieved the best Glycerol concentration at the time (6.02M glycerol, 1992). A-2091 (name withheld) also had a glioblastoma and reportedly "target cryoprotectant concentration was reached in the brain".

Thomas Donaldson (A-1097) had an astrocytoma (I guess Astrocytes are a kind of glial cell, but I doubt the comparison can be extended further) and his cryopreservation was very good [p.16].

I am far from an expert and simply would like to hear some authoritative commentary on this

Disclaimer: I am not medically trained.

EDIT: I'm not sure if you're referring to brain damage affecting cryoprotection or brain damage affecting her mental state and making her opt out.