All you have to say to her is: "I just am looking for someone to fill this void in my life. For example, I've spent $70,000 on movie posters to trying to satisfy my loneliness... I imagine if I ever did find the right girl; I would spoil her like a princess..." You would most definitely get laid...
And if not, just kill her, and then get laid, but make it quick so that the plan works.
You're a lawyer. You know how to get away with it.
"Your Honor, the massive 6 foot tall glass frame fell off the wall as she tried to straighten it and then admire the beauty of the first James bond poster (laugh and giggles from the seating gallery) , and it cut her up pretty bad. I did warn, i mean, i asked her to be careful but she wasn't"
"Yes, my fingerprints are all over her and the glass shards that protrude from her naked body, but this is my house!"
Case dismissed!
Simple. The US justice system in action.