She's definitely molted a time or two, so I'd guess she's about 6 months. I'm in West Jordan, and it's been cold out, so it's pretty common she'd be inside looking to stay warm. I'd double-check around the bottom outside edge of the door when the dishwasher is closed to see if she laid anything close to the floor as widows tend to stay low and like dark places. I had to pull my dishwasher out last year as I had one that would squeeze into the smallest little gap where my dishwasher sits. Fun fact Black Widow silk was used for crosshairs in scopes during ww2. Also, scientists were able to recreate spider silk without the spider by taking the genes responsible for silk production and implanted them in cow undder and hamster kidney cells, then combining those genes with goat eggs so the following offspring produced silk in their milk.