Yogi- you only have to watch another’s feelings if it is normal. Your friend obviously gets insulted from nothing and it’s NOT your problem.
Yes, you should be very careful around her and make sure to respect her, but when it comes to saying a normally understandable statement(we cannot come this shabbos), and she gets insulted- it’s HER PROBLEM.
NOT YOURS
NOT YOURS
NOT YOURS!
I also know such people and I seriously don’t think that we’re obligated to tiptoe around them all the time because they get insulted much too easily.
As long
as you know, that you really spoke nice to her, then you shouldn’t think into it much more.