What is the ruling on the prayer of a sister who is bleeding slightly due to a wound after giving birth to a stillborn child, and is her ablution valid?

If a woman becomes pure from postpartum bleeding (nifas) after a stillbirth, the few drops of blood that may descend due to a wound are not considered nifas or menstruation (hayd), and do not prevent prayer or other acts of worship. These drops are pardoned if their total amount is small. However, if they increase, they must be washed off for prayer, because removing impurities is a condition for its validity. Whoever prays with impurities intentionally, their prayer is invalid and must be repeated. As for one who prays with impurities out of forgetfulness or ignorance, some scholars hold that they do not need to repeat it.