Hi Eva,
A big Aussie welcome to Susan's family. You'll be pleased to know, we aren't anywhere near the attitude of your present family, so you can feel safe here to express whatever you need to express.
I like your the simplicity in how you accepted yourself when you said, "I just AM a girl..." That's just so beautiful. Because that's what you are. Nothing more, nothing less. I'm really pleased your father is so accepting as well. It's quite important to have such a close relative to be there for you. I hope it develops into a unique rewarding relationship.
Don't worry about the deep voice, that's just one of the many things that over time will change, and there is no particular order or timeframe for them to be addressed. You'll know when the time is.
Hope to hear more of your successes in time to come, but in the meantime, be safe, well and happy.
Lotsa huggs
Catherine