>>33919013Whitney is an RNG battle for the first time going in blind.
She is infamous because the vast majority of this fandom got caught off guard by miltank the first time.
You need a female mon to avoid getting fucked over by attraction, your best offensive bets is a very rare headbutt mon and a trade with a random NPC. Defensively, your best bet is geodude at this point who, again is still fucked if it's female.
Regular poison is your best bet at chip damage which is made useless since she has Milk Drink.
It's deceptively fast and it's quite bulky considering where you're at in your playthrough.