what does "or I do"mean?
She glanced toward the window she’d left unlocked, toward her glass deck door and the pots of mixed flowers she’d set up in the sun.
“I’m out of the house a lot, and I’ve been spending most nights down with Eli. And since I was careless enough not to lock the windows, it would be pitifully easy to get in here, to leave that gun here. But why? I don’t understand why here? Why me? Or I do, but it’s convoluted. If someone wanted to discredit me, implicate me to cast doubt on Eli’s alibi, why not just plant the gun in Bluff House during the break-in?”