Rashid Hospital is a government run hospital. If he's admitted there, she should try to apply for the charity offering in all government run hospitals for people who cannot pay. If she was on her husband's sponsorship and he has lost his job, then she can apply at the immigration to allow her to stay for the duration of her husband's treatment, in the meantime she should try to look for a job.
Even if she goes to Pak or she takes him to India... Medical expenses might be a bit cheaper but not free how does she expect to live?
I think the best option is to somehow stay in Dubai, raise the money, do the charity thing and hope for the best.