Not to be labour the point, but you need to get to the bottomline of her question, which is she is pregnant and she expect to deliver within the week she lands in the USA. Hence her question was in regards to her labour & delivery more than her medicaid/medicare.
We can all accepted that it is unlikely that she will be able to land employment in such a short time. Additionally from her comment you can deduce that she does not completely understand the healthcare system, i.e. she throwing words such as medicare and medicaid failing to realize that there are requirements a person has to meet in order to qualify for these gov't funded programs. Furthermore even though a person may qualify for either one of these programs, the person may still incur cost for their healthcare, such as co-payment, etc..
To put this topic to bed.... my comment is people need to be candid about lfe and issues in USA, but at the same we need to also realize that immigrants (regardless either DV, employment, or family-sponsored) have agencies they can turn to so that they can integrate into the society in an effectlve and rapid manor. So let take care with our comments and feedback to individual's questions