Woman neighbor behavior making me feel uncomfortable

Hi ladies, I could use your advice! My husband, kids and I recently moved far from family, we know no one here. We met our neighbors down the street, they were very welcoming, invited us over, reached out etc, they have kids our kids' age and my daughter especially connected with one of their daughters (they're 5). We seemed to click right away. We have seen them several times, sometimes me and her with the kids, sometimes the 2 husbands, sometimes all of us.

Well, I started to get a vibe that she was interested in my husband. Nothing outrageous or downright flirting, but things like intentionally engaging specifically him in conversation, asking specifically him what he thinks about this and that despite my husband and her husband sitting in another part of the room etc. She would comment to me about how great he is. It bugged me a little, but again nothing outrageous and we overall enjoyed their company, so I dismissed it. My husband and her husband are becoming closer friends, I have no issues with him.

Then one day we hosted them for lunch and playing with the kids. She is American and they speak English at home and to each other, but she, her husband and my husband also speak a language that I dont speak and is my husband's native language. She asked me during lunch how well do I speak it, I told her none at all and hardly understand it. Well lo and behold, she kept engaging my husband in conversation in that language. Like multiple times. To the point that I am just sitting there at the table with them while the 2 or 3 of them are chatting and I was left out. They would switch back to English at some point, then she would switch back, one time she even gave me a smirky look like it's funny. I counted at least 3 or 4 times she did the language switch with somewhat lengthy conversation.

Afterwards my husband and I had a pretty long talk about it that turned into somewhat of a fight. I was hurt by not only her doing it, but him allowing it. He thought I am taking it way too personally, I found it rude and hurtful, especially given the vibe I have gotten of her towards my husband, it felt like she was trying to put a barrier between me and my husband, otherwise what was the purpose? But in the end he agreed to be more mindful and respond in English if she does it again.

Next day, they went on vacation for 3 weeks overseas, and I honestly felt more peaceful. Theyre back now. My husband and her husband hung out, cool. My daughter keeps asking to see their daughter, my husband wants us to go to their house for lunch. I am just not feeling up for it. I feel bad especially for my daughter who wants to see theirs, and I will certainly be polite to this woman when I see her out, but do I want to be buddy buddy, do playdates etc after shes behaved this way? Not really. Especially given we have known them such a short time and she shows signs of overstepping boundaries, I feel like perhaps I should distance a bit. My husband thinks I am being ridiculous and reading too much into it.

What do you think? What should I do?