Complex sentence: Sarika feels that marriage would be the biggest hindrance in her path of becoming a dr. However as the marriage takes place and Sarika comes in Jai's house, he becomes the biggest supporter of her dreams.
Split into simpler sentences: Sarika feels that marriage would be the biggest hindrance in her path of becoming a doctor. However, as the marriage takes place and Sarika joins Jai's house, he becomes the biggest supporter of her dreams.