Harry is strategically performing as a good host here, making his voice louder so that it will seem like he and Pearl have not spoken in the hall. The fact that Bertha references that pear tree may suggest that Pearl is aware of Bertha’s attraction her, and the significance of the tree in Bertha’s mind, but that she is prevented from acting on this by social convention. Or it may indicate that, although Bertha believed that the tree was significant, and that she and Pearl really had a connection, it is, in fact, incidental and Pearl has not understood her meaning at all. Bertha’s memory of the cats under the pear tree suggests the destruction of her hopes.