I feel sorry for Humbert, but I just pity Lo.
He wanted to relive the life that was taken from him. But he chose a girl who was simply not compatible with him. And the age made all the difference. As he said, he should've walked away from that hotel that day.
Lo on the other hand was just a young a free spirited girl. In other words, pure destruction for someone like Humbert looking for true love and companionship. And of course she went to whatever pasture was greener. It's in her nature to do that.
I hope when Humbert died, he got to live in a place and have true companionship with that girl who died when he was young.
I can't really say much else about Lo, but she was young and dumb. And Humbert only made it worse. She would've been a normal girl without him. True, she was gorgeous and full of life, but she was just too young. And anyone who's been in love long enough knows it's the mind you love not the body. Lo just didn't have what Humbert truly wanted. He got the beginning, but Lo could've never gave him fulfillment.
Sad movie. But hey... at least he blasted that prick Quilty in the end. I particularly liked the part with him running away and his wang going back and forth and he scurried into the other room. If there was evil in this movie, it was him.