What might an Orthodox Jew think of a Christian?

I met an older orthodox Jewish woman today. There was something about her that I couldn’t put my finger on at first that made sense later.

She was dressed very modestly, and had a stern look and a distinguished accent.

She was nice and we talked a little until she asked if I had kids. I said no but Lord willing I will find a wife and have kids one day. Then I said but she has to be a Christian or else it won’t be compatible.

I felt a silence and looked over at her and she was staring at me in a way that I felt my stomach sink. It wasn’t a look of anger but just either disapproval or separation.

I have no idea what she was thinking but it made me a bit nervous and I stayed quiet after that.

I tried to relax a bit because honestly when I hear someone is a Jehovah’s Witness or a Mormon I have my own reaction and feel separation so maybe that’s just what she felt.

Any input on what Jews might think about Christian’s? I’ve met a lot of Jews that are open to Christian’s but she was more orthodox