Tatya and her little sister were both fostered to an orphanage after their parents died of to a strange epidemic. She was older and when she reached 15 years of age she joined the police academy. Unfortunately she had to leave her sister behind because without a stable income she couldn't adopt her herself. While she was still only a trainee her sister was adopted by a merchant. The sisters promised that at first chance they would meet again. In the mean time Tatya started working undercover on behalf of the police. She was good at her job but it wasn't meant to last. One day her sisters letters stopped arriving. When she tried to investigate she found out that the now-bankrupt merchant had sold her to a brothel to repay part of his dept. Some further investigation showed that her sister had taken her own life a few months later. Tanya found the merchant and made him pay for her sister's demise with his life. She left the police and decided to infiltrate the thieves guild that controlled the red light district. She will avenge her little sister and she will change things so that no other girl might pass what her sister had to. Now she goes by the name of Lyana. She is known as an ex prostitute from a different town that bought her way out of the trade and now is trying to get her own business started.

1) Character Sheet
2) Back Story

I wanted to ask, would it be ok if I swapped "sleight of Hand" with "Investigation" as part of my background granted skills?

Color selection for PC this