One of the former Labour MPs who rebelled against the government yesterday has shared of the conversations the whips had with her.
The whips are the people who deal with party discipline.
Apsana Begum told Sky News that she was "shocked" with her treatment.
Ms Begum spoke about the support she had previously received from the party following her own experience of domestic abuse.
She said the "element of supporting me" - including with legislation - "was actually put into the context of the whipping operation itself".
"And that was shocking and I think unacceptable," she said.
Ms Begum was asked if this meant Labour offered support for bills she may propose on domestic violence if she obeyed the party line.
She said "yes", and branded it "unacceptable" and a sign of the "draconian" line being taken by the party.
Labour has been approached for comment.