Isso pode ser Aftershock ?
O protagonista tem poderes elétricos, como pode ser inferido a partir da capa.
Kneeling down, I slammed my hands into the trail of water connecting us. Instantly crackling threads of pink electricity ran through the puddle and over the alien’s body, engulfing him in a deadly electric glow.
Ela usa o cartão de crédito de seu pai para pagar:
I whipped out my daddy’s American Express Platinum card, which he had thoughtfully provided for all my birthday shopping needs.
Existe um personagem chamado Pluto:
Fortunately Pluto was there to fill the gap. ”Aiiiyeee!” he screamed. “It’s her!”
E algumas viagens no tempo:
“So,” I said slowly, “you think I wanted to see her so badly that I somehow traveled backward in time?”
É realmente parte de uma série.