Lucky had been begrudged for a long time due to her father's continually increasing busy schedule, he barely had time for her any longer.
She missed the time when it was only her and Predator. Then, she could be the only Princess who that blockhead Predator doted on every time.
Predator may be possessive and unnecessarily aggressive at times but he missed his protectiveness then.
Now, Predator was changed, he was now mature and focused on more important things than having fun.
If only Predator was the problem, she wouldn't feel as bad.
After contracting Akela, it was still all good but once Bran was contracted, her father's priorities really shifted from her at that moment to them.
Later, when Warp Prime was added to the equation, Legolas totally forgot about her, only focusing on how to empower his beasts and himself.
When she complained, he blamed it all on the Cataclysm.