Dr:VR Beta Cases

Case 2

Girl H is the Protagonist
I might adjust this from time to time since this might be confusing

MonoNeko File:
Girl SI (Girl SP's sister) was found hanging on the basketball ring, upside-down in the gym.

Time of Death: 4:00
Cause of death: Asphyxiation

Alibis: Almost No One had any Alibis
Boy ??? lead Girl H to the gym and that triggered the BDA but they're one person short.

The rope used to hang was from Girl SP's Lab.
That's the only place that has ropes.
Girl SP claims that her lab has no lock and no cameras.

The Basketball Ring can lower and rise.
The Systems for the gym are only accessed by Boy TP

Girl PD claims that there was water in her throat while doing the autopsy.
A small puddle of water was also found under the body

Boy S claims that he saw Girl SI coming out of her room while he was in trash duty.

Boy ??? passed by the gym and saw the body.
The gym doors were open by that time but he closed it.

Boy LG claims that he saw a lifesaver in the pool but he placed it back in it's proper place.

There were no Lifesavers in the pool, only in Boy LG's Lab.
Boy LG's Lab is in the back of the pool.
Rules state that you can't swim during Nighttime.

A note was found near the pool but it was slightly wet:
I need to talk to you about something...
Meet me at the □□□□ at 4 am
-Boy □□

Boy TP went into Girl SI's Lab to get something that he left.

Suspects:
Girl SP
Boy TP
Boy LG
Boy ???
Girl H

Who killed Girl SI?
If you want a hint:
Ask MonoNeko about the Pool Rules (Direct)
Or...
Ask Boy TP about the Note (Indirect)

You guys can comment your guess (just don't look at other people's comment replies)