It is also possible she has got used to falling asleep at the breast then wakes to find you are not there I would lay her down before she falls asleep so she will start to get herself to sleep. the hair drier shouldnt be near her as they are very powerfiul emfs given from them, I would leave on quiet restful music , leave the room do not worry if she fusses for a bit.
Make sure that she is full when going to bed at night. Start winding down for about an hour before bedtime. Brush teeth, get night clothes on. Sit and read books or watching videos. Have her sit in your lap and run your fingers threw her hair. Once she is relaxed and tired, full, it is bedtime. Bedtime needs to be comforting. The breast feeding is comforting for her and that is why the bottle does not work. She needs comforting before bedtime to help her unwind.