Is it correct to use the subjunctive form or quejarse here "Yo pienso que ella se quej(a/e) poco"?

I believe it should be written as

Yo pienso que ella se queje poco.

because Yo pienso que implies subjunctive so you would use the present subjunctive form of quejarse which is queje. However, my textbook has it as

Yo pienso que ella se queja poco.

Am I wrong or is my textbook wrong?

submitted by /u/thecoderboy
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