Now tease her nipple with your fingers and twist it a little.
If it doesn't hurt her, then suck them as hard as you can.
See how much pressure she can take.
Stroke and let it go with your mouth.
Tease her breasts by kneading them softly, caressing them, and kissing all but the nipple.
Never force a woman into anything.
Most women can have a powerful orgasm through sucking their nipples and breasts because there is a nerve that connects the nipples and her clitoris.
No pressure, but talking about it might enhance the experience.