Jill is very nervous or anxious. Don't beat around the bush kinda means don't do something irrelevant so that you can avoid something else that you have to do. Jill's heart becoming a bass drums means that something was causing her heart to beat fast, it could be worry, anxiety, fear, etc. Her face becoming a calm ocean means she calmed down. The spray nozzle is simply being compared to the way an elephants trunk hangs loosely
