Ref. No. 1026/41-194
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
If she wakes up and finds wetness while she is sure that it is not mani (sperm) rather she is sure enough that it is leucorrhoea or pre-seminal fluid then she is not obliged to do Ghusl. She should make wadhu and perform Namaz.
And Allah knows best
Darul Uloom Waqf Deoband
This answer was collected from the official website of Darul Uloom Deoband Waqf. The institution is based in India and the answers are provided in accordance to the Hanafi Fiqh.