Hi Maz, thanks for posting the spider bite pics, they pretty much replicate the physical appearance resulting from the Zebra spider (
Salticus scenicus) bite I saw. It's impossible to determine how much damage results from the venom and the secondary infection.
You spider does look like a
Steatoda nobilis, an introduced species from which there are a number of recorded instances of bites. Be aware that she is able to produce a number of egg-sacs containing hundreds of young and they are minute when they appear and hard to contain.
If you're not happy with her around the house I'd put her and the egg-sac out of the way, but obviously there'll be more and no doubt you'd easily find others where she was found.
Regards, No.9 Spider
P.S. Nice to know that although petrified of spiders, you also find them fascinating. Wish I could say the same about me and earwigs
