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Sorry to hear about your mother. Her loss because her daughter is clearly an awesome person.

We've never really made that much of a big deal about it around here (in my family at least). I still wish my mother happy mother's day (and these days I also wish one of my sisters who is now a mother happy mother's day too) but apart from that, it's mostly just like any other day. The acknowledgement is enough but I don't think we've ever actually all out celebrated it like Christmas.