Every person has a past. The older a person is, the more of this past he has. When meeting a man, a woman rarely thinks about his past. But he may have previous marriages and children from ex-wives.
Getting to know a child from a first marriage can be a challenge. Quite often, children, and especially daughters, from their first marriage perceive their father's new wife as an enemy. And if the ex-wife of your beloved has no one, then she also "adds fuel to the fire." Be that as it may, but peace in the family needs to be improved.
Acquaintance
A loved one should introduce you to your daughter. If for some reason he does not do this, then the matter is serious. Maybe your daughter is strongly opposed to you. Maybe his relationship with her mother has not yet been fully clarified. In any case, this suggests that he has no serious intentions towards you.
If, nevertheless, he decided to introduce you, then you need to be prepared for any development of events. The daughter can be polite to you, she can be hostile, she can try to improve the relationship herself.
The latter case is the least likely, but it still happens. Then you are a happy woman. In other cases, you need to behave correctly.
At first
If your daughter is cold or even hostile towards you, do not try to make friends with her and impose your society on her. Let the father talk to his daughter, walk with her, buy her things, as before. If you constantly interfere with their communication, then this will not end well, as you will annoy her and prevent her from sharing things that she only talks about with dad.
Do not curry favor with the daughter of a loved one, load up with gifts or sweets. Children feel great about themselves being false. In this case, the girl may become even more distant from you, stop respecting you and will not take you seriously. Communicate with her on an equal footing, not allowing yourself to be used.
Do not reprimand the girl if you think she is behaving incorrectly. You don't know how her mother brings her up. Remarks to the child can be made only after you have established a normal relationship, but by no means at the stage of acquaintance. In addition, the girl has a mom and dad, who should raise her. The most you can do in such a situation is to ask the father if this behavior is normal for his daughter. And then it is better not to educate the child with moral teachings, you can only give friendly advice.
In case of aggression
You should not immediately complain to your beloved if the girl is behaving aggressively towards you. Do not take offense at the child. It is possible that the negative attitude towards you is caused by the mother of the girl, who turns the child against you. The child should not perceive you as a sneak. Yes, and you should not answer with a negative attitude.
Try to stay calm anyway. Over time, the girl will understand that you are not her enemy and that a negative attitude towards you is not justified.