How do you even know if you want to go up in her guts? Did you already ask if she secretes sufficient vaginal juices to make sex with her better than beating off? If she says no move on no sense in fucking a hot girl with a sand paper pussy. If she says yes, demand a dipstick test so you can ensure she's not lying and you don't waste your time. Also you can figure out if she's got good viscosity to her pussy snot.
Let me know if you need more advice.