The answers you’ve gotten above sound mostly right to me. I also wanted to point out the very real possibility that this woman just happens to be an awkward, even brusque lady who’s not an especially smooth operator. Sometimes it happens and there’s nothing intentional or personal about it.
In general, I’d say that Catholic parishes are much worse at things like welcoming than your typical Protestant church might be. You might go to a Catholic church a hundred times without anybody ever making a point to come over and say, “Hi, I noticed you’re new here! Let me tell you about our…” At many Protestant churches, a new person could hardly make it up the front stairs without being singled out and helloed. I’m not sure why this is; perhaps it is that Catholic parishes are on average far larger than the local Protestant churches down the street, and also more likely to have people (Catholics) attend who are not regular members – because they are in town, or parish-shopping, or wanted to go to Mass at a specific time, or just for a change. It can sometimes be hard for people who move and join a new parish to get welcomed and meet people. I always suggest signing up for volunteer activities, joining the choir or a Bible study, and things like that – you aren’t likely to just get collared and dragged into a social group.
On the plus side of things, some non-Catholics who are interested in learning more about the Church and want to attend a Mass as a visitor occasionally worry about getting singled out, pressured and asked questions, or looked at funny because they do not know the responses or what to do. Nope, nothing to worry about! In all likelihood no one will pay special notice to them at all. We get visitors all the time.
At any rate, don’t take it personally. This is a long-standing (and increasingly recognized) weakness of ours – at least in this country; I don’t know about others. Another benefit though, if you’re curious, is that once somebody joins the Church nobody will think of him as “oh, that convert. Yeah, he used to be Jewish; he’s only been with us for a little while. Still stands out, though.” Once you are in, everyone will take you as being just as Catholic as anybody else.
Best of luck and many blessings on your journey.