Does a large number of insects (black ants) around and on the grave have any significance?

Please clarify a concern I have developed after visiting my mother's grave. She passed recently and after visiting her grave recently I noticed an abnormally high amount of ants around it and on the grave. Does this have any Islamic significance since the unusual amount of ants was such that I could hardly offer dua for any significant of time because they started crawling up my pants? This naturally has been highly disturbing and led me to find out if this could be interpreted as punishment being suffered in the grave. Is that so?