I know it's really rough right now for Kelli and your support will be something she will remember and cherish. Hopefully you can both get some decent sleep tonight in your lovely memory foam bed and maybe things will get going on their own tomorrow. This is not at all uncommon.
Take care of you both, make sure you eat and stay hydrated and keep her hydrated. Walking, hot showers with the spray on her lower back, warm baths, etc is basically the best medicine right now. Your midwife is doing everything I would want done for me with all that I know. Hailey is definitely worth all the pain and frustration but you know that already.