This isn't a dumb question. What she's asking about is known as Mutual Intelligibility or Linguistic Distance, depending on how you read it.

Languages in the same family tend to score well, such as the three Romance languages she listed. Estimates of French <-> Italian are often in the 80% range. That doesn't mean you can speak the other language, but in a bind an average Italian may be able to catch about 80% of what a French person is trying to convey.

This is just mean, judging someone who wasn't taught the nuances differentiating language from dialect.

There's 100%, a partial understanding among romance languages. I've communicated with humans in real life bc of this understanding.

And she's clearly intellectually curious and open to learning by asking this online. So we should feel bad that the education system failed this fantastic woman.

Low effort. Downvote. Borderline victim blaming. This isn't Reddit. Don't pick on people.