To find the original amount, you do the amount she got correct divided by (1 minus the percentage).
Let P = amount of problems on the test.
P = 14 / (1 - 0.56)
= 14/ 0.44
≈ 31.818 repeating.
You can have part of a question (in this math, that is. Partial credit IRL exists) so we round to the nearest whole question, 32.
The test had 32 questions.