Allan is in her third week of chemotherapy following her cancer diagnosis.
She was diagnosed with stage 3 cervical cancer earlier this month.
"I've been blown away by the messages, the letters, cards, emails, flowers, books, gifts and all the prayers and love I'm feeling across the motu."
"She is awesome. She is a force of nature."
Twyford's wife, Joanna, will be undergoing treatment over the coming months.
The senior MP says negotiations are taking place in "the context of a Labour majority government."
Watch Ardern's speech here.
The donations were made to the Labour Party in 2017.