Sometimes deeply hidden unconscious dynamics from the family system are behind sexual blocks or sexual problems. It is worth doing some research here, especially if a woman cannot open up to sexuality at all.
I have integrated family constellations according to Bert Hellinger into my tantric work. Because the most beautiful massages and lovemaking techniques are of no use if lust is denied out of attachment to ancestors. For example, a grandmother may have been raped during the war. The granddaughter can - without knowing it - be connected to the fate of this grandmother and therefore shut herself off from sexuality. There are many other reasons from the family system, which you can find here: https://befree-tantra.de/tantra-liebesschule-online/tantra-wissen/familienstellen
Do you have experience with family constellations?