Question

What is the indirect speech for she asked me "where is your sister".?

Answer 1

She asked me where my sister was.

Answer 2

There are some major rules to change the speeches from direct to indirect. We need to consider the tense, pronoun, words that describe time, place, distance, types of sentences, etc. let’s have a glance at the following rules:

In an indirect speech the pronoun changes according to the speaker whether s/he is referring himself/herself or a third person.

Usually, the present changes to past tense while we change direct speech to indirect.  
It means Simple present tense change into simple past tense.

Reporting Interrogative sentences:

I) If there is a yes-no question in the direct speech, then the reported speech will start with whether/if and the reported clause form will be (subject+verb).

Question :

She asked me "where is your sister".?

ANSWER :

She asked me where my sister was.