Her story details an important concern for females: heart attacks symptoms commonly experienced by women are not typical. By typical, I mean those characteristic heart attack symptoms of chest pain, shortness of breath, pain radiating to the the shoulder/left arm, etc.
Heart attack (myocardial infarctions) in females cause symptoms such as (but not limited to!): nausea, sweating, fatigue, upset stomach, flushing, indigestion, weakness, shortness of breath, dizziness, anxiety, etc. However, also note that some females also experience the 'typical' symptoms as well.
|The heart can be deceiving... (Binary Heart, from XKCD.com).|