Filing an eviction a month after notice

[Stone Teran]

I put an eviction notice on the door of a tenant on July 7.  I was stupid and believed her excuses (and I had several vacancies coming up) so I didn't file the eviction.  Now it's August 17 and it's clear that she's not paying, so I will be filing the eviction.  I have not accepted any rent since giving the notice.  Do I have to put another notice on her door or am I free and clear using the one from last month?