I think the rubber she is referring to is the trim you are talking about.
MFX_Neko_86 the trim is actually plastic, but i agree with you both that they are stuck on like a bastard. I recomment just masking it off when respraying because its such a hassle to take it off (the side ones at least - the top one i presume is clipped on but if someone has siliconed it then just mask it to prevent cracking it)
Best place to get replacements is from the wreckers dude, but i doubt they'd be stuck on like the previous owner did to yours. Fix the windscreen first