I spend more than a fair amount of time massaging
Vanessa's extremely cute and soft feet - they're as adorable as she is beautiful!
Vanessa is fair and usually up for anything safe. She also has a real fun-loving personality, so it won't be difficult to ask her for what you're interested in. Just as averagejoe mentioned, I would also expect the price to fall within the standard - 15 minutes for 50 euro, but you might get away with longer than 45 if you offer her 150 and show her a real good time ;-)
Cheers,
... Eric