How awful. But yes, all women cis or trans, run the risk when dating. Guy expected something she wasn't ready to give? Beaten, raped, killed, etc. Pissed the guy off somehow? Same thing. And some are just sick and will harm for no reason. Just because they feel like it.
But yes, trans women are at increased risk. Please be careful out there, girls women. This kind of thing happens to women of all ages. Please be careful. Meet them in a public place. Tell someone where you're going and who you're going with. Cis girls learn this. You might not have. There are millions of dead and missing cis and trans women who trusted the wrong person. Or went on a date and never came back. Don't be a statistic.