At first you might think this may mean she was very uncomfortable living plural marriage, (maybe she was, I don't know,) but in actuality she had probably schooled herself not to speak of it in order to protect her family from the law. I know that her father spent a lot of time in hiding, as an outlaw for living plural marriage (as did President John Taylor), even had a special cabin where he hid near Logan, Utah that is supposedly still standing. Maybe Harriet was just worried that someone would use her words as proof against someone she loved.
I've been honing my research skills and was studying a textbook that included some tips about errors in the Federal Census records. One example was that often the Utah Censuses from back in the day were inaccurate because the subjects were concerned that they would be prosecuted if the government could prove, through their census responses, that they were breaking the law of th

I'm certainly glad that I'm not asked to live that particular law, but the more I learn about how things really were back then, the easier it sits in my mind. I know that only some members were asked to practice it, and even then they could refuse if they wanted. From accounts that I've read, though, they were asked to pray about it first and would usually receive a spiritual confirmation that they would be doing the right thing and would be blessed immeasurably for taking on this particular challenge. For example, one of my friends who studied women's history in college has mentioned how advanced the women's rights and opportunities were in the state of Utah compared to the rest of the nation, mostly because they had other women to share the load. I think that even more than establishing families, the importance of the early Saints living this law was to test their mettle and try their obedience, like Abraham sacrificing his only son. I'm glad that I'm not asked to, but I hope I would have had the courage and selflessness to do the will of the Lord, no matter how impossible it seemed.
So, Grandma Harriet, I wonder what you thought, and I wish you could have told us, but I'm glad that you were good enough to do what needed to be done.