Is the moisture a girl finds on her underwear after waking up from sleep considered a wet dream, even if she did not see anything in her dream that would necessitate its discharge, especially given her suffering from excessive waswas (obsessive doubts) and uncertainty in acts of worship, and the difficulty distinguishing between mani, madhiy, and wadiy?

We advise you to completely disregard whisperings (waswas). If you doubt a ritual impurity (hadath) or an increase or decrease in prayer, do not pay attention to this doubt. As for your doubt regarding the discharge that exits from you, you must strive to learn about its types and the characteristics of each. The types of discharges exiting from a woman's private parts and the ruling for each have been previously explained.