My wife has GAD, and i do not. Im not quite sure if its Anxiety related or not but my wife talks about sex alot, like texting me saying she wants me after my shower when i get home. When i get home, i get a shower, then walk in the bedroom and she says "not tonight hon"

This happens often. Or...she will be talking and she will start talking sexually. Telling me what she wants, and i might begin initiate, and she giggles , "i don't mean right now"

Im all for her changing her mind but i think, "why even bring up the subject if you're not in the mood? Is this normal anxiety behavior (constant mind changing) or is this just my Wife?