He's a pain in the neck on his worst days and the sweetest person she's ever met on his best. Peter can be her pet and stuffed animal or her human love, whichever Alice wants- all she has to do is ask him to change forms.
And it's all and only for her. Although she dislikes it when he draws his gun randomly, especially on the maids or soldiers or on some innocent person, she knows he'll never so much as point that gun at her. More than likely he'd rather point it at his own head than at Alice… and she thinks it's also more than likely that that's what he'd do if she ever left this world.
It's occurred to her more than once that the reason she fell for him is the reason he can be so annoying at times: his continuous shower of affection that sometimes earns him a pulled ear when he's too much is what softened Alice to him in the first place.
As she sits and stroke his hair, Peter's head on her lap, she thinks of the times she's been jealous. He's a very good-looking man, smart and with power both physical and in rank. It's no wonder that other girls have fallen for him- for despite his cruelty to the rest of the world, this has happened.
At those times, Alice wants to hit him- has hit him, in fact- and yet as soon as he turns those adoring eyes on her he's won. Right now for example; she's stopped stroking his head and ears, which seems to have confused him.
"Is something wrong?" he asks as he blinks up at her.
"Nothing at all," is Alice's answer. Smiling down at Peter, she says dreamily, "Everything's wonderful."
"What are you thinking about?" is his next question.
She sees no harm in answering. "I'm just thinking about how lucky I am to have someone as faithful as you love me."
Peter blinks once, twice. Then he sits up and throws his arms around her, beaming. "You're so adorable, Alice! I love you so much! Really, truly love you!"
Although the spontaneous hugs can be a bit much at times, she just smiles and return the embrace. He's not perfect, but he's as close to it as she can imagine.