Hello and welcome

Many people now say being transgender has biological connections, to do with brain development before birth.
So its nobodys fault, neither the transgender persons nor their parents upbringing or whatever.
here is a link to a resource:
https://www.susans.org/forums/index.php/topic,180045.msg1658077.html#msg1658077Some people say they will be like their male/female twin, with the same sense of humour...
This is a resource with a very emotional description of an accepting parent, talking about restraints some people might have:
https://www.susans.org/forums/index.php/topic,190486.msg1697083.html#msg1697083at college there might be a therapist, who could help you along...
best way imo would be to look for a good gender therapist to help you...
and at college there might be a lgbt club with other transgender people...
who you might talk with...
here are a few further thoughts:
https://www.susans.org/forums/index.php/topic,180045.msg1658077.html#msg1658077Well its up to you what you say since you know them best...
you might show some resources, like the NHS brochure, and parts of the unicorn dads website...
the british NHS is a reputable source...
its sometimes cis people cannot relate, and think things are imagined.
But it isn't, there is proof that parts of the brain can develop along a different pathway from the body, leading to a mismatch in identity.
This is nobodys fault, and there are many birth conditions that simply happen. It has nothing to do with religion, but should be dealt with love and an attitude of helping one another.
Some people write a letter, summing up a few facts, and with some of their emotions and examples of what they experienced...
without being reproachful, just telling so that cis people can relate a bit...
there are some examples in the brochure and on the unicorn dads website...
hugs