Amara did not know what's wrong with her friend today but knowing her past antics it was not that weird, So she was just going with the flow wanting to answer her.
She though taken aback by how shocked Liora became but she ignored it as Alex leaving indeed created big turmoil in the capital, Hearing this name would bring out those shocked emotions.
Especially Liora being a cousin of Belladonna was the party directly related to the issue, So it can be scratched off as she did not expect Alex to be here.
But for Amara it was good that this topic came out. Now she can make an official statement and declare that the marriage contract between Winchesters and Belladonna is invalid now.
Liora being cousin of Belladonna means saying to her this would be valid pr at least get the ball rolling before they can make an public announcement.
"Well technically yeah but their relationship is only on the paper, The marriage contract would be going to get discar-"