Usually you would sponsor someone to care for your child through the live-in caregiver program. However it doesn't sound like she would qualify. Here are the requirements:
Successful completion of the equivalent of a Canadian secondary school education
You must have successfully completed the equivalent of Canadian high school education (secondary school). Because of the differences in school systems across Canada, it is not possible to give a precise number of years. In most provinces, it takes 12 years of schooling to obtain a Canadian high school diploma. The immigration officer assessing your application will let you know what is needed.
At least six months' training or at least one year of full-time paid work experience as a caregiver or in a related field or occupation (including six months with one employer) in the past three years
To claim work experience, you need to have worked for one year, including at least six months of continuous employment for the same employer. This work experience must be in a field or occupation specific to what you will do as a live-in caregiver. This experience must have been acquired within the three years immediately before the day on which you make an application for a work permit as a caregiver.
To claim training, it must have been full-time training in a classroom setting. Areas of study could be early childhood education, geriatric care, pediatric nursing or first aid.
Good knowledge of English or French
You must be able to speak, read and understand either English or French so that you can function on your own in your employer's home. For example, you must be able to call emergency services if they are needed, and to understand labels on medication. You will be unsupervised for most of the day and may have to communicate with someone outside the home. You can also read and understand your rights and obligations if you can function in English or French.
http://www.cic.gc.ca/english/work/caregiver/apply-who.asp
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