I'm glad to hear that the people here helped you!
I have a very sensitive clit, and I had a really hard time orgasming with my guy (I've yet to orgasm during sex). However I do have some suggestions that might help her! Water can be a really good tool. You can let the fact of the tube just wash over, and you can adjust the pressure by using your hands over the facet. It's very self-exploratory, and for a first timer it can be embarrassing, so just be encouraging, but not too much otherwise she'll feel like she HAS to! If you have a removable shower head, sometimes those come with different settings that feel good.
My favorite spot, after being a little stimulated, is beneath the clit. It's sensitive, but there's enough flesh there to keep from over stimulating! Lube, spit, anything like that is really good, because friction can be waaay too much for a really sensitive girl. Tongues are really soft and smooth, but can apply a good pressure too, so that's probably why girls like it so much haha
I have a suggestion though. It was always a surefire way for me to orgasm with my guy. Lay down on your back, and have your girl 'sit' on your face, supporting her weight with her knees beside your head. She can adjust where, how hard, how much, all just with little shifts of her body. It can really help her discover what she likes, while still letting you in on the process! It takes a while for me (about 20-30 min for me), but it feels AMAZING. It's also a plus for couples that like a little powerplay, or just want to explore it a little. haha Best of luck to you, and any who read this!