she told him from the very beginning that she can't bear children. there were no lies. she is respecting the contract that she signed with him.
I mean they have a contract to not love each other and both think that their feelings are one sided, there's also the fact that Lucia already told Hugo at the beginning about how she cant be pregnant, of course there werent any evidence for that but Hugo never questioned it as he had no interest in Lucia at the time. To suddenly call her to see a doctor after many months of disinterest in her disability to bear a child without talking to her privately is imo kind of putting her in the spot
Y'all saying he's putting her in the spot but she's wrong for keeping it to herself she's a married woman let alone they both love each at some point he'll want to have a child