Kirsten Steinke is responding to her parents' voices as they read the messages of support that have flooded in from New Zealand and the United States.
While she is still in the intensive care unit, Ms Steinke's condition has improved to critical but stable.
"Keep those messages coming," said Jim Steinke.
"We know she's responding to them."
Jim and Gerri Steinke and Gary and Jean Stithem had previously thanked everyone for their continued support, offers of help and "immeasurable kindness'' following the fatal crash at the Waitomo Caves intersection on SH3 last month.
Kallan Stithem, 31, died at the scene while Kirsten Steinke, 28, was critically injured and remains in intensive care at Waikato Hospital.
Mr and Mrs Stithem returned home to Denver, Colorado last week with their son's ashes.
A vigil attended by more than 100 people was held for him in downtown Denver last Thursday night US time (Friday afternoon NZ time).
- © Fairfax NZ News
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