Of course I died a lot because
a. Every laner is either slightly ahead or fed as fuck (cough Kat).
b. They had every damn reason to roam even though not lane was bright with wards.
c. I was on tilt when I saw the scoreboard.
And I was even with my laner despite being a kill behind and dying one more than she did. You just fall victim to snowball after stuff like that happens.
I mean, it is a team game. Bot lane is pretty restricted to their lanes especially when the enemy laner can just kill you with one wrong move. But if top or mid gets fed, they'll most likely roam and murder bot.