Anxiety, depression, PTSD, mother

I have generalized anxiety disorder, depression, and PTSD. My mother has severe depression, PTSD, and borderline personality disorder. She is currently hospitalized for attempting suicide, and asked that when she gets out if she could come live with me my husband our baby and two dogs for a couple weeks. She herself has two dogs and because I'm on maternity leave I'm home all the time. I feel like a horrible daughter but for the moment I told her no. With my own mental health issues and being a new mom I just can't do it. Am I awful for saying no?