Just report her. If you are sure of your facts abs know that she's doing wrong, then report her. Nothing else matters. Not her feelings, not your co-workers, nothing.
So I did talk to my supervisor, and I basically got the standard "I'll have a word with her". My guess is nothing will happen. I have to work with her tomorrow, it's also my 11th day in a row working with no days off (between both my jobs) so I'm already burnt out.
If you think she's boring now, probably not a good idea to continue. Sounds likely you'll get tired of spending time with her, but the more you do the more likely she is to get attached.