Mom can't find out I brought home a boa constrictor, Sandra thought. She had
always wanted a pet snake, but she needed to find the right time to tell her
parents that she had gone ahead and bought one.

How does the use of point of view create suspense in the passage?

The first-person point of view means that the audience recognizes that
boa constrictors can be good pets if they are given adequate space, food,
and exercise.
The third-person omniscient point of view means that the reader is aware
that Sandra's mom is deathly afraid of snakes and is about to have the
most terrifying experience of her life:
The third-person omniscient point of view means that the audience knows
that Mom is likely to find the snake in the laundry hamper and is curious
about what will happen next.
The first-person point of view means that the reader is inclined to
sympathize with Sandra's perspective but wants to find out if Sandra is
acting irresponsibly.