That's very true. Stella is probably the most consistent & passionate character on the show. She knows the difference between using her head & heart but ultimately she knows it comes down to the evidence. I guess it's really tough for her when she felt so strongly about something & then everything changed when she found that brain cell & Grace's white shirt. I don't think she would be half the CSI she is if it wasn't for her feelings. Her feelings allow her to be such a strong person & the team knows that, especially Mac & Lindsay know. Seriously, if she didn't the fiery, take no shit personality she has she would be very, very boring. All that is due to Melina though. Maybe it's the Mediterranean/Greek side in Melina that gives Stella this vibrant personality but whatever it is, she's doing fantastic!