Roommate's Departure Leaves Big Gap

Hello to all!!! This is a very unfortunate situation and even worse during the holidays. I am asking for help this time around as my roommate unfortunately decided to abandon her responsibilities and leave me with unforeseen finances. I am sorry for asking, but thank you in advance for any help at all. I have my half of everything, but I am only looking to make up her part in order for me to save and be okay for the following months.