Eve understands Pride's attitude. She knows that 'their sin' prevents them from doing many things and limits the help they can receive from other people, especially when that person is someone whom Eve wants to protect so badly.
But on the other hand, Eve's love for Lucien and their sisters works positively too, allowing her to 'force' Pride to accept working as a team.
However, that kind of thing cannot be forced quickly. Eve knows that with the accelerated evolution of Lucien and Amelia's power, Pride will soon understand that they also need Lucien's demonic energy not to be left behind. Then Eve can go back to having pat sessions with her little brother as they did when he was just a kid.
"Not only trying to boost your troops with my aura, but we can try other things... just not now." Eve talks to Lucien.
"Pride is against it, doesn't she?" Lucien smiles at Eve but intends to show a teasing expression to Pride.