Summary: Komarisa was in the bottle for some reason and couldn't squeeze out. Patchouli comes along and tells Marisa to tip the bottle up. When the bottle drops and rolls, hurting the komarisa, patchouli and her spawn giggle. The komarisa decides that despite the pain she will get back at the bad patchouli. Unfortunately, the kopatchouli was in the way of the koyukkuri powered bottle and splatted, saving the mother and killing both babies. Marisa tries to get revenge but slips on the bottle while trying to jump over it. The bottle goes forward squishing the Patchouli and Marisa falls to her apparent death.
Komarisa was in the bottle, most likely due to an A-sshole-non stuffing her in it since the bottle was still upright. Marisa knocks over the bottle so the Ko can escape, but it can't get out. Patchouli, the mother, suggests to Marisa to tip the bottle so the Komarisa will slide out, while her little sister Patchouli encourages Komarisa. Marisa then tries lifting the bottle only for it to slip and roll away, hurting Komarisa. Komarisa gets upset, and says she "doesn't know a father who hurts her" and would rather have her mother rescue her, which of course shocks Marisa. Ko then rolls towards the Patchoulis... only for momentum to keep her from stopping and squashing her little sister to death, which in turns kills Komarisa either from the impact or shock or both. Marisa gets pissed and stomps on the bottle telling it to die, only to slip off it as it slams into mother Patchouli and kills her. Marisa herself just seems knocked out(the Reimu and Alice are like the little dizzy birdies,) but now her entire family is dead because of a bottle.
There is a difference, though. According to ChicoBob's version the bottled Marisa is mad at Patchouli for laughing at her and wants to destroy her by ramming her with the bottle. In Ojisan's version she's mad at father Marisa for mis-handling the bottle and hurting her, and wants to go to Patchouli for comfort and help.
1. The Patchoulis being the mother(of both Kopatchouli and Komarisa) and sister is omitted. 2. The Patchoulis never laughed at the other daughter's plight. 3. Komarisa is angry at her father, not at mother Patchouli. 4. Marisa didn't try to get revenge on Patchouli, and didn't try jumping over the bottle, she tried to smash the bottle directly. 5. Marisa isn't dead. Though this one is more interpretation than anything else.