I would suggest giving her space, privacy and comfort for the first few months, while she gets adjusted to her new home. Having dark spots in the tank, like a dark cave (with 1 entrance) will help her acclimate. Gives her a place to hide. Your turtle may just end up being a shy turtle, although they will know who you are, and will be comfortable with you. They just feel more comfortable being shy.
1 year and half later, my girl is just as shy as she was day 1. But she does feel comfortable with me. When I take her out of the tank she will run around. Often run at me and either climb on me or snuggle up against me. She also hates it when I scratch her shell, she tries to bite me! But in the water, she prefers to hide and watch from a distance. Total opposite of the boy!
Litefoot, that's interesting. Several studies found on Google Scholar mention that Red Eared Sliders are a temperature-dependent sex-determination species. Not saying you are wrong, but it seems that these types of studies have been in progress for quite some time. They are experiments and theories, though, and not undeniable laws. I'm sure that temperature alone won't absolutely get you a boy or girl, but it seems that it's a big factor in several reptile species, not just RES.
Check this article out:
http://aerg.canberra.edu.au/library/sex ... turtle.pdfAnd as an interesting side note, this study done shows that a gender imbalance occurred due to climate change, an interesting connection.
http://www.bioone.org/doi/abs/10.2744/CCB-0670.1