So I'm pretty sure this girl at my church is a lesbian but is in some major self denial. She is very clingy especially with other girls and she's always half flirting with girls her age. There are other things she does that tell me she like girls. Problem is her family is very conservative and that's probably why she hasn't come out yet. How do I approach her about this (I've been friends with her older sister for all my life) without offending her or alerting her family before she's ready?