Vada certainl;y hooked up with a lot of dudes
I bet she had sex with 25 different dudes by the time she graduated high school.
Let's say she takes 2 trips every summer, 1 during winter break and 1 during spring break. That's 4 dudes per academic calendar, and then let's add in one guy for fall semester and 1 guy for spring semester.
I doubt she does random hook-ups, it probably takes a few days to break her in so I am not going to factor in some senior banging a passed out sophomore in her mom's whirlpool (as appealing as that may sound).
Ok, so that's 6 a year x 4 years of high school = 24 + the guitar playing greaser who shattered her world during the 8th-9th grade transition summer = 25
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Now...she's artsy fartsy and independent, so it wouldn't surprise me if she took a year between high school and college to travel around Europe. I can't even imagine how many European dudes bedded her during this exploratory phase in her life, but we could definitely be pushing triple digits by the time Aykroyd awkwardly drops her off at her freshman dorm.
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OK, still with me? Now Vada's life takes one of two possible roads:
1) There is a good chance that she winds up at an all girls school (seems like the type), kind of seems like a good candidate for Wellesley. She most likely explores lesbionics for a semester or two before having her way through a string of professors on her way to a double major in Biology and Philosophy and an eventual career as a dentist.
2) If she doesn't go to an all-girls school then she is definitely going to go to a liberal arts college. At this point, she is so experienced that she is going to be pissed off when some freshman dude drunkenly fondles her and jumps the gun, to turn a phrase. So, she does a few fraternity brothers to appease her friends and look "normal", before getting on track with some philosophy professors and maybe a dean or two on her way to becoming a sex psychologist. She will no doubt attend University of Michigan for her PhD and marry her research adviser.