Some kids are just like that. My two live/d on minimal sleep for the first 2 years. When i stopped trying to make them sleep it got easier for all of us.

Can you take her into the shower with you? Sit on the floor with her if it makes you feel a bit safer. I had a mat with a warm towel ready so i could wrap baby up as soon as i got out. Relaxing bath/shower and boob sometimes did the trick.