Cellar spider takes down another cellar spider

I've had this chunky gal hanging out in one of the corners of my house for a while. I didn't think she'd be very successful based on where her web is set up, but judging by all the fly corpses underneath and this takedown, it seems she's eating well. I was actually kinda worried that these two would be mating because an egg sac is the last thing I'd want to deal with. I'm actually terrified of spiders but I've slowly been trying to make my peace with them. Also, excuse the background slamming if you can hear it, that's one of my neighbours.