All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu 'alyhi wa sallam, is His slave and Messenger.
Shaykh Ibn ‘Uthaymeen said: "If this woman performs ablution after the time of the obligatory prayer had come, she can pray any obligatory or voluntary prayers she wishes or recite the Quran until the time the following obligatory prayer is due, at which point she has to renew her ablution."
Allaah Knows best.