You shrug and wiggle through the "door", your hands popping through after. You reach out and grab a part of the "soft wall", resulting in a moan from the outside. The girl notices you and moves towards you. She gives off a friendly smile as she reaches out her hand. You grab her hand and she pulls hard. Eventually you pop through and she falls onto the "floor", laughing.
"Welcome to the womb." She says, getting up.
"Wait... Womb...?" you ask, with which she responds by a nod.
"Yeah... I got sucked in her last month. Been in here ever since." She gives you a hug.