So, she's taking antidepressants, now what?

I’ve been dating this girl for about 2 months. She’s big on trust, and feelings, and honesty, and all that. Today I found a mystery pill in my apartment that must be hers, it’s an ssri – she’s never mentioned depression, or medication.

I believe that:
a.) it’s totally fine to be depressed,
b.) it’s totally fine to take prescribed drugs to deal with it,
c.) it’s lame, and kinda like lying to selectively omit this key piece of info., and
d.) having the talk that i think we should is only going to make things more serious, and i’m not sure i want to, especially given this discovery and her reluctance to talk about it.

Am I being lame? What do you guys think?