@SymphoniI think you should reconsider your dropping out.
Not everything you write has to be brilliant. Hell, most of the things I've written in the RP so far are pretty damn basic - no soul, few fancy words, no development, no information about the character. I think I can play my character relatively realistically (so far) and I come up with some good quotes every now and then but other than that, I've got nothing unless some idea guides me.
You don't have to post as often as others if you are concerned about length. You can take your time and do one longer post every two cycles, wrap up all your actions and reactions in one big post. But what I've seen from you so far makes me think that you can keep up and it would be a real bummer if you dropped out.
And if, for some reason, you think your character isn't good enough the way you conceived her, I'll be happy to talk to you about her and come up with some details to her life.
Don't be intimidated by a few posts. If you really think you're out of your depth, then I believe you should take the opportunity to explore something new, something more challenging, get a feel for it. We're all here to support you.