I don't know why at this time, neither Carolina nor Dexter really like all kinds of weird things. Things related to both. They really don't want what they are doing in vain.
Carolina and Dexter are always trying to be good parents to Antonio. Even though maybe Antonio was here he wasn't always so spoiled and fussy. But right now Carolina wanted Dexter to always pay special attention to her son. Carolina already knew that Antonio might turn out to be the child Dexter didn't expect, even if it was just her fear. But indeed Dexter seemed a little strange because he was now starting to pay attention to Antonio constantly.