She hadn't been in a relationship for a long time.
Not that she didn't want to, but she couldn't afford to, because of her type of work.
Nobody likes living with an assassin.
She doubted that her friendly neighbour would look twice at her, if she told him she killed people for a living.
Best he did not find out, she thought, and stepped out to make preparations.
+++++++++++
It wasn't a bad idea at all, she thought, as she stalked round the man's room, taking in everything.
She poked at some few things with her gloved hands and boots, but found nothing she couldn't handle.
Then she spread the acid around, determinedly, thoroughly soaking everything in the room.