I realized after I wrote the long post that I could have responded more simply as follows:
I don’t understand how you can possibly question what I wrote since you yourself have responded in similar ways with less reason for it. How about the fact that you wrote (or implied) that you didn’t think that LB should be askinig about bubble umbrellas? How can you posken that it’s definitely fine? Why didn’t you tell her that she must ask a sheilah? In that case, the issue was about something that is not mentioned one way or another in halacha, so how can you assume that it is mutter?
In this case, LB had not spoken loshon hora according to what she wrote. Why should she be made to feel that she has to ask a sheilah about every word she has ever said if there was no reason to think there was a problem?