Hello, I would be happy to help you with your question.
A heart beat of 135 at 14 weeks is not necessarily abnormal, and I would not think that this would be reason enough to abort the pregnancy
. What she needs is an amniocentesis
to fully evaluate her fetus for Down's syndrome or some other genetic problem. The tests that she has had done are 'screens' and they are positive, but not diagnostic. She needs a diagnostic test before she makes a decision as significant is this one.
I hope that this helps and good luck!!