UPDATE
First of all, thank you for all your opinions since last time I posted, I am sure they are useful not only for myself but also for anyone else checking this topic trying to understand Libras a little bit better.
So, it seems like TaurusNikki, libragirl37 and Dafna79 are closer to the truth.
Like I've said before I had to contact the Libra girl for professional reasons but I never did it personally until here and I didn't change that, what I did instead was to ask a girl friend of hers who also works for me to do that; this particular friend was in the picture with me in the water park I mentioned. So after contacting the Libra the girl her friend came and have a conversation with me where she jokingly started to say that she believed that the Libra girl had a crush on me because she was initially very harsh with her on the phone when she picked up, like if she was mad at her or something but then it fade away as the conversation flowed.
I took the opportunity to try and get some more inside info and told her also jokingly that it was unlikely that the Libra girl had that crush on me since she happened to refuse an invitation to go with me that day (because she believed she would be too tired one week before); her friend told me that was actually very true and she knew for a fact that the Libra girl had been working 12 hours a day that week, was out of town a couple of days and only had that one day to rest and it would continue to be like that for the following 3 weeks, she didn't even had the time or energy to go out with the girls as they usually did. She also told me that the Libra girl confessed she was feeling very stressed because of the working hours and felt like punching everything she saw lately...
I did not get much more information and didn't gave away any myself and the conversation soon focused on business only.
So, in light of these new events what do you all think, should I stick to the prior plan or did anything changed?