Unspoken Worse Option 4 will almost certainly make option 3 look like a preferable outcome by comparison. She's probably going to be a Cronenberg from now on.The stupid revive machine either gonna turn the gyaru into :
1/ Pure girl , ends up happy with the friend.
2/ Memory wiped , return with infant mental age and friend get stuck taking care of her.
3/ Remains of a fly got mixed in , revive as a bug/human hybrid and start eating whoever she was banging alive and finally mc has to save the friend after the gyaru already ate like 5 people.
The way this manga is going probably something close to 3.