Cat is peeing in just my spot

my husband and I rescued a cat almost 3 years ago. She's the sweetest cat! She makes these adorable bird noises when you pet her or when she wants attention. Loves my husband more than me even tho I was the one who wanted to take her in lol.

We have two other cats who are younger than her. she's around 8ish years old. There was hissing ans growling for a while but she basically stopped that. She'll only hiss if our other female cat is by her and she doesn't know til she turns around.

Anyways. She's been on this kick of peeing on the couch and just in MY spot! We've gotten a new couch because we thought it had stopped and that the smell was just from the times she's done it before. Well shes still doing it and I even caught her doing that on the cam we have in the living room. I don't know why she's peeing on just my spot and nowhere else. She's only done it about 3 times in the 2 months we've had the couch

Any thoughts or suggestions? 😕

* We called the vet office but her vet we've been taking her too is out of the office til Wednesday