She was trying to stay away from more high-profile tasks that involved targeting people who had more fame, which would attract more attention if they disappeared one day or turned up dead somewhere.
A lot of the targets she dealt with were usually people who would not be missed too much, and they would be less likely to have their deaths featured in the media for long.
If their backgrounds were not too good and they were involved in a lot of things that could make them a large number of enemies, then that made it much better for her.
She could kill them without worrying too much about there being a bigger investigation to find the killer, as it was possible that a lot of those deaths would be seen as being random events of violence or the work of their rivals and enemies.
If they were involved in various crimes and were affiliated with some kind of gang, then they would have a larger number of people who could have been behind them being killed.
