Update
Yesterday I found out that she has been late a lot. A higher-up complained so I had to go personally and speak to his secretary. I had to involve my higher up ...
I have caught her in a couple of little lies and I am not liking it... I'm documenting everything.
I told my supervisor I didn't mind the move as long as she did her job and a huge part of our field is to be on time, actually 15 minutes early because other people are depending on us to be there to take care of business and it cannot be done if we are not there so we hold up the whole process .
I wish things were different and that she was on time. So silly in my opinion to jeopardize your job with tardiness... No mention of substances, just late.