Hmm, it seems odd that Dock is missing. If you minimized finder, it would be in Dock, but if Dock is missing…
Maybe you can try a reset of Dock. Here is a guide from iDownloadBlog:
“With the following Terminal command, you can do something similar to the OS X Dock. This command will reset your dock by removing any icons that you’ve added and restoring any icons that you removed. It’ll also reset the size of the dock, reset its magnification settings, and its location.
This is an all encompassing command that makes it super-easy to get your dock looking new again. To use the command, open the Terminal app and type the following:
defaults delete com.apple.dock
Press the Return button on your keyboard to submit the command.
Now, type the following to restart the Dock:
Press the Return key on the keyboard, and the Dock will restart. Once it reappears, it’ll look good as new.”