Keep going

Uncertain if you're already able to go further, you remain in that position for a while. Her breathing get's continually heavier and from time to time she even moans softly. After a while she closes her eyes and leans forward on the counter. This gives you the opening you were waiting for. You sink quickly but gently to not disturb her on your knees. You carefully pull her panties with your left hand to the side and replace your fingers with your tongue. After a few licks over her lips and a couple of circles around her clit you delve into her slit and start to eat her out. The moaning from above becomes more frequent, approving your work. You don't wait long until you pull your head back a bit. She immediately follows you, but before you dive back in, you grab her panties and pull them down. No longer required to pull the panties away from her slit, you grab both her thighs and intensify your efforts until her moans become frequent and steady and her body starts to get shaken by waves of lust. Careful not to make a sound, you unzip your pants and pull out your cock. You wait until her body shakes again and replace your tongue with your fingers once more while you stand back up. Your left hand grabs around her waist while the other one guides your cock as you slowly move forward and push into her. She tenses her body and let's out a surprised squeal before she starts to slowly relaxing them again. Only when her body is completely relaxed again, do you start to move inside of her.