To answer your first two questions, in order, no and nope!
Listen, the baby's "normal" is whatever she experiences. She's not comparing you to the way you may have handled the other kids, etc. Sure, it's a transition, but you can help her work through it mentally and emotionally. This is our job as parents - to prepare our kids for life situations and greater independence. It's also a prime opportunity to develop a greater trust as she will learn to branch out socially, conduct herself w/teachers and peers and see that "Mommy always comes back to get me!" This is huge!
When our son started in the church nursery, camps, sitter, etc. it was always hard to leave. He would be crying, clinging to me, the works. But I'd always hang around (out of sight) for a bit and literally, within two minutes he had adjusted. The BEST EVER is when I go to get him and he runs out calling "MOMMY!" with a huge smile. He'll babble on about what he did, how much fun he had and we'll have big hugs. The increase in confidence is evident after each experience because he knows we won't abandon him.
She'll do great - no worries!
As for resume, I can't be of much help here, but there are several moms who can give some great tips.
Good luck to you!