Answer:
She had 8 doubles.
Explanation:
This question is solved by a system of equations.
I am going to say that:
x is the number of singles.
y is the number of doubles
z is the number of triples.
46 hits
This means that

46 hits totaled 66 bases
This means that:

4 times as many singles as doubles
This means that

So



And



Then






She had 8 doubles.