unreasonable I get what you’re saying but I see it differently. I know op put “friend” in the title but she explains that they don’t know each other that well, only a few get togethers, always as a couple. That is key I think.
Here is what op has said:
(1) the woman mentions it to the op’s dh not op
(2) the woman is an acquaintance of dh and even less of an acquaintance/friend to op
(3) the woman is not a close friend of either
(4) she has done a few things as a couple with op and dh so op understandably thinks it’s a couple thing at first
(5) she mentions it to dh, not op, so I think she would assume dh will be involved in going and taking op as a couple
The acquaintance is much more likely to have understood that dh and op are going as a couple from the outset than for op to magically know that acquaintance is not bringing her husband as she always has before in the few get togethers they’ve had. I think you’re forgetting that the woman mentions her idea to the op’s dh. Not to “pass along to your wife about this event and we should go as gal pals.” She didn’t do that.
The only other way to see it is that the woman mentions it to op’s dh as a fun event meaning she wants to go with op’s dh without op. That’s even weirder considering she is an acquaintance not really a friend of dh. Yet she is planning to go tagging along with a couple she doesn’t know that well, leaving her own husband at home (why?) and booking the same hotel, wanting to ride back and forth and spend the whole weekend. B I Z A R R E. If there is a misunderstanding, then op can say, look, we’re celebrating our anniversary weekend and I thought you meant we would all be going to this event as couples, like we always have, which means you would ride with your husband, I would ride with mine, or we would ride together and go our separate ways for the day after as we are staying over for the weekend to celebrate our anniversary, then we can ride back together.
I don’t think op originally thought she was going to have to provide a ride in the first place to this person. Just because dh hears the idea from the person does not mean she owns said event and op and dh are contract bound to go with her to the event, provide rides, make sure they stay in the same hotel for 3 days. I totally get what op is trying to say.
The acquaintance is either clueless or something is off with her.
I think you are presuming that this person is a very close friend of the op’s. Well, she is far from that. She is an acquaintance of op’s dh that op has seen socially 2 or 3 times, always as couples.