If she is under 18, you will need to apply for a settlement visa for her; it is the same process you used when you applied for your spouse visa. The application form for settlement is the same for spouse, fiancé or children.
You will need to include in your application details of the father and who has been looking after your daughter while you have been away. When we applied for my step son, my wife was sponsor and wrote a supporting letter detailing their circumstances of the father and that her mother was looking after him while she was in the UK. We also include a letter from her mother confirming that she had been looking after him.
If you apply now for the settlement visa, you will then, at a later date, apply for ILR for her, if you were to wait to apply after you have been granted your ILR then you can apply for your daughter to have Indefinite Leave to Enter (ILE). This will save you having to apply for the extra visa.
