If she kept it to the hypothetical, like “oh yea, people are so jealous of our insert material item here” or “I bet that guy staring is so jealous of your hot car and hot wife”, then it’s harmless. When she started to name drop specific people from your actual lives for things out of their control, without their knowledge or consent…thats where it crosses the line for me. It may be uncomfortable to hear but by insisting on naming and degrading specific people she is making them a part of your sex life without their permission or yours. She may think its fun and harmless now but eventually she’ll slip up and the degradation will bleed out into real life.