The out-loud reason April might give for fucking herself up by trying to show up that sitting duck antagonist Becky is that the poor sap is innately bad and ruinous and always has been. We see in Becky someone a damned sight like April herself so we're dealing with the same sort of depressing clusterfuck that has Luann De Groot piss all over her clone in all but name Tiffany Farrell while whining that no, she's not jealous because both depressing idiots are the victim of moron parents who sell them on the dumb idea that only bad people have bad moods.
What differentiates Luann from April is that the former is at pains to keep herself from admitting that she's the same sort of passive drone who expects things to be handed to her on a tray that Real!Tiff is while April has a different problem. April screams about how jealous of Becky she isn't because she'd rather not admit that yes, she does think that Becky should get to run her life for her and win all the time and take everything from her because Becky didn't kill that fucking dog and that's why no one can or should love her. Simply put, April's convincing herself that she made up the country boy and marrying the Continental was decided on a river bank years ago and nothing can stop it.