Student or Learner
She's often tortured by a sudden pain in her heart, and the pain feels like squeezing and burning.
Please be aware that I'm neither a native English speaker nor a teacher.
Native English speakers, your opinions are highly appreciated here.
She often gets (experiences/feels) a pain in in heart; the sensation is of squeezing and burning/there is a burning sensation, and it feels as if her heart is being squeezed.