بسم الله الرحمن الرحيم
In the question mentioned above, if you performed Hajj with your daughter when she hadn’t reached the age of puberty by then, then it cannot be regarded as her fardh hajj, rather a nafl hajj. Thus when she will perform her hajj after she attains puberty then her fardh will be complete.
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.