Oh, wowzers, this is good. Her caring/panic about Harry, dislike/unattraction of Vernon, memory of bathing the boys (together? I bet Dudley pinched Harry) and then her neglected desires and not realising who he is until the end. And him telling her the truth, it's clear they're on the same side when it comes to Lily (is that why she's felt so much loss and despair, or is the despair over the blob of a man she's married to now? That's all I can guess right now).
It's really hot too, of course :p