Can my mother get the history from years ago?

I dont live at home anymore, and I gave my younger brother my old computer. We have had the same IP address for a LONG time and when I lived at home, I watched porn, video chatted on some websites and did some of the average teenage boy stuff, however, my brother told me that my mom is getting a complete report from our IP provider ATT and giving her a report of the complete list of websites visited since our service with them 5 years ago can she do that? Will she ever find out I looked at porn and all of that? Can the company provider with that info even if it was years ago?