My mother is very relational. The people she knows and interacts with are important to her, and she has a natural inclination to value opinions and information presented to her by those people over other sources.
While I value input from people I know, I tend to take a more skeptical approach to new information. My inclination is to attempt to assess the quality of a source, and cross-reference information across multiple sources.
This difference in approach has led to conflict between us.
As an example, we've been trying to plan a family vacation together. For various reasons, the timing of our vacation coincides with the rainy season in the location we're considering visiting. I found out online that this rainy season has a period of several weeks where the rain is much less severe, and there is typically a good amount of sun.
The sources of my information (several travel blogs, some of which are written by residents of the region) suggest traveling in late July/early August for avoiding the worst of the rainy season.
My mother's source (a travel agent located in an area far removed from the region we're planning on visiting) stated that early- to mid- June is the best time to travel in the rainy season.
When this difference came up on our conversation, I said:
It sounds like we're getting contradictory information. I think we should do some more research, and see if we can find out which is correct before we make a decision.
My mother's response was:
I think the woman who told me June knows what she's talking about. Her family owns a couple of properties there, so I know she knows what she's talking about. June is the best time to go.
I could just give in and agree, but I know that if we go in June, and it does wind up being too rainy, my mother will complain constantly (they don't want to go in the rainy season at all, but because my son is in school, we can only travel during the rainy season). Even though traveling in the "dry" portion of the rainy season doesn't guarantee we'll get some sunny weather, I want to maximize our chances of having good weather.
I also think there's a difference between someone who lives in the region (or multiple someones), and someone who doesn't, but whose family owns a couple of properties in the region. Especially when that somebody is a travel agent trying to sell a vacation package.
However, when I suggested it would still be worthwhile to do more research, my mother got upset and changed the subject.
How can I productively question word-of-mouth information that my mother presents as fact?