Your name has come up recently as a notable potioneer in the area and I am in need of your services. I am a local midwife and I need to produce a potion of... a delicate nature. I am unsure as to whether or not you see fit to make such potions, and I will in no way hold it against you if you are unwilling, but your services would be handsomely rewarded.

I would be amenable to supplying additional information either through owl or in person if you prefer, but I do need the interactions to be discreet, if you don't mind.

Cost is not a problem and yes, the possible side effects are familiar. 

Height is just over five feet and weight is roughly one hundred ten pounds, very slim build. Development is early, a little over a month, it was caught early.

Your help is greatly appreciated. Please let me know if you need anything else.

You will find your full payment enclosed. Your respectable reputation precedes you and I'm hoping this trust extends to your discretion. If this matter were to get out in any way, my business would most certainly be ruined. This address is the place. Thank you for your services.