the egg will not have been hers
You do not know this - this could very easily be the natural child of both Victoria and her husband.
For all we know, this couple have been hoping for a second child since the first was born, and it just never happened. They may have accepted that they would only have a single child, and then been thrilled to find that Victoria has become pregnant.
And frankly, I think that your assumption that "the egg will not have been hers" is ridiculous - you may be right, but in that case both for her own health and to increase chances of a pregnancy going full term, the couple would probably have employed a surrogate - not just "bought an egg".
Whatever it is, it is their business and no-one else's.
(Also, adoption isn't just like picking a kitten from a litter. Most children in care, even many of those who have been fostered from birth, have massive mental health problems. I have nothing but admiration for people who adopt, but they often take on a lot of very hard work, and the older the child, the more difficult it usually is - those early weeks and months and years shape the child's psyche. And there are very few babies available for adoption - most are toddlers at least. Plus, you don't just walk in and say "I'll have that one." There is (rightly) a very stringent process to go through.)