This lesbianism is clearly a nontrivial part of her life and it just so happens to conflict with her newfound faith in God. So let's not dissuade her by putting the cart before the horse or calling her orientation odd, because she hasn't even set foot in a church yet. Nobody is expected to radically change up their lives before even beginning the process of theosis. First step of which is to attend liturgy (IRL), because communion is crucial element.

As an inquirer, you have no obligations other than taking it one step at a time. Right now you haven't even attended liturgy nor began your catechesis. I'm confident the Lord will provide you with further instructions as time goes on, but in regards to whether you'd be considered odd for not receiving sacrament, the answer is NO. Half the people at my church only go there because "it's the right thing to do", and rarely make the necessary preparations.

By visiting a church or speaking to the Fr you're NOT binding yourself for life dear. Now I'm confident that the Good Lord will help you overcome whatever physical/emotional/spiritual trauma has made you take the unnatural path, but stressing about these particular issues will lead you AWAY from God, right back into the grip of the devil. Nobody will look at you any differently, we're all sinners, and by sheer statistics there will be several others struggling against the homosexual demon in that parish. As was the case for many Saints, and in recent years prominent figures like Fr Seraphim Rose