Answer:
Continue to support the team's decision on sizing.
Explanation:
User story is usually written by a product owner and it is created to making sure that what the customer requires are well documented and clear to all the parties involved before rolling out the product.
The product team would usually deliberate upon the story presented by the product owner and come up with an agreed user story after point sizing and deliberation .
While the team is struggling coming to terms with an acceptable user story with regards to the above; the product owner who is a expert in domain expert and who feels the team is wasting time has no choice than to continue to support the team's decision on sizing because she is part of the team and moreover, product owners are more team oriented unlike product managers who are business oriented.
