I'm curious what made tikana say yes. Your significator in this chart is Mars, and Mars is in the eighth house. Typically, the eighth house means bad things in horary: death, loss, things not going your way, that kind of thing. In natal charts, especially with a modern astrology interpretation, the eighth house can mean a whole lot of other things, including some good things. In horary, my understanding is that the positive interpretations of the eighth house are rarely or never used. (If I'm wrong, someone please say so!)
However, Mars is domiciled and rules the house it's in, and it aspects the sun very tightly. Those things would strengthen it. Maybe that's what she was looking at?
In any case, why cast a horary when you've already made the decision? And for this kind of decision, do you really need to predict anything? You're not signing your life away, you're just trying out this theater institute. Unless it's more serious than you made it sound, all it is is a chance to see how you like acting. The worst thing that could happen is you decide it's not for you after all. That's not a disaster.