Expressing oneself in a limited medium without the benefit of body language and voice can be fraught with peril. Subtle nuances get lost and what you meant to say may look like something completely different to the reader.
I don't know if you offended anyone or not but I certainly didn't see anything inflammatory in your earlier post. Human relationships are complicated. Parent/child relationships are sometimes extra complicated. There can be a lot of hurt there that leaks into other things. It sounds like you might have been worried that it seemed you were being harsh to your mother. I took your comments as sarcasm and not something mean. Even if I did take it as something mean, you do not present as a callous person, so I would just assume there is history there. My relationship with my own mother isn't easy. Some people are difficult, not just with family but with everyone. It is good that you show so much love to your mother even when she is difficult. Just make sure you take care of you too.
I can't speak for anyone else but no worries here! Remember, "We're human...and I like that!"
Sleep easy, you did nothing wrong.