Hello. Thank you for your question today.
Just in relation to your question, I'm not sure if adoption is the right option for you.
This is due to the fact that the age of majority is 18 years of age and a child is free to do as she/he wills after this age.
If the child has some difficulty, such as a mental or physical, a guardianship application can be made in the family court.
Hence, her father would not have to be contacted in relation to her changed preference to living, education, birth name etc
She has the autonomy to all now if she is capable. If she isn't fully capable, then guardianship is the best way to achieve your needs. This is done through the family court.
If you need further information please respond.
When you are finished, I hope you will rate this positively.