For the past three or four years my east facing kitchen window has been home to a slow growing wolf spider. She has lived all this time between the storm window sash and the inner 'house' window. Now and then I have left for her an occasional housefly or small lively bug which she promptly dispatches. Several times a year she will molt, leaving a smaller ghostly version of herself hanging from a thread as she outgrows the carapace.
I've tried leaving the upper outer sash down in spring in the hopes she will leave and find her own spidery way in the world, but she'll have none of it.
How she has survived all this time amazes me, since it must be brutally cold there, sunlight and absorbed heat from the inside notwithstanding.
About a week ago I noticed she had descended to the lower half of the window and was suspended by one leg from a web line, much the way a ballerina goes on point. She's not a young spider any longer, and this may be the last of her. She may also be in a serious molt. I don't know.
Seems a strange thing to say, but I shall miss her presence.