Can you detail the story of how Radhakrishnabai overcame her persistent bad dreams by using Udi and worshipping a picture of Baba?

According to the provided text from Chapter 35, the story you are referring to does not involve Radhakrishnabai. The source recounts the experience of an unnamed gentleman who suffered from bad dreams and broken sleep. He was able to sleep peacefully after keeping a packet of Udi under his pillow. He later installed a picture of Baba, worshipped it with garlands, and found his troubles were removed. Chapter 35 mentions Radhakrishnabai separately, praising her for her great, selfless service of waking early to sweep and clean the paths Baba walked, despite being a Brahmin worthy of worship.