"When we got there, it turned out that actually Maggie Barry had invited us there to be part of her agenda against Maryan Street's bill on assisted dying. I don't believe that the cause of great palliative care ought to be exploited in order to advance Maggie's agenda against the bill."
Ms Street said she had welcomed the discussion on caring for terminal and chronically ill patients, but her invitation gave no indication that the debate would target her bill.
Ms Barry admitted after the meeting that only one side of the euthanasia debate had been heard, but said this was mainly because of technical difficulties.
The guest speaker, Baroness Ilora Finlay, could participate only by conference call and therefore a full debate was not possible.
Asked whether it could be considered a cross-party discussion when only one point of view was given, Ms Barry said all parties were invited to the meeting.
"My aim for today was that people would be better informed about the options that exist in New Zealand at this time so that politicians can make a better informed decision if the [private member's bill] is ever drawn out."
Baroness Finlay strongly criticised the bill during the meeting, saying it was "full of black holes".
She said a law change would normalise assisted suicide, and would lead to people ending their lives prematurely or without properly considering rehabilitation.
"With many conditions, we know that with time people not only adapt but go on to retrieve a quality of life they never imagined they would find again."
Ms Barry echoed these concerns after the meeting, saying Ms Street's proposed law change was a terrible bill that failed to protect vulnerable patients.
Ms Street said no legislation was foolproof, and her bill would make every effort to "mitigate the worst of human behaviour" during the select committee process.
The Labour MP said she was distressed that the meeting appeared to create a divide between palliative care and euthanasia and she felt the two options were not exclusive.
LEGISLATION'S AIMS
* Individuals could choose to end their lives and receive medical assistance to die, in specific circumstances.
* The patient must be proved mentally competent by two doctors.
* The patient must have a terminal illness likely to cause death within 12 months or an irreversible condition making life unbearable.
* The decision to end a life could be made only after family and medical consultation and after a seven-day period of reflection.