She never divided herself into two people.
However she did use a time-turner to go back in time so she could take two classes at once.
In book 6 Ron Weasley made Hermione Granger cry on page 302.
Her name was never revealed. In Harry Potter and the Deathly Hallows Hermione Granger modified her parents memory and made her mother believe she was called Monica Wilkins
It made her teeth grow rapidly and very long.
Hermione crys when she sees Ron with Lavender, but there's no actual lead up dialogue.
He said they couldn't let the house elf's die for them.
Hermione's weight is never mentioned in the books so it can be presumed that there was nothing unusual about it which made it significant to comment about. Certainly the actress who portrays Hermione is not obese, or even slightly overweight for that matter. So, no Hermione isn't obese.
The Densaugeo spell caused Hermione Granger's front teeth to enlarge grotesquely when she attempted to fix her teeth in the book "Harry Potter and the Goblet of Fire."
Hermione put a memory charm on her parents to protect them from the death eaters. She made them think they were different people, who didn't have a daughter and who wanted to move to Australia. By having them move there they were safe and didn't worry about Hermione. If meant if she was killed they wouldn't spend their lives mourning their daughter because they wouldn't remember her: which also made them really hard to trace.
Ron Weasley is Harry Potters best friend, also friends but feuds frequently with Hermione Granger. He comes from a poor family, has 5 other siblings, and has a father who works for the ministry of magic. He is often made fun of for his red hair. He is quiet a bit wimpy, but is always loyal to Harry. In the last book he ends up with Hermione Granger and has two children with her, Rose and Hugo.
Hermione Granger wanted to protect her parents and so made them forget who they were. She made them think they wanted to move to Australia and that they didn't have a daughter because she knew the Death Eaters would torture them when she went missing. She later reversed the charm and brought them home.
I think it was the class right before Ron made her upset. I think it was the class for teaching spells. I don't exactly know what it's called...
No, Hermione Granger had very large front teeth until she was fifteen. She tried to convince her parents to let her shrink them but, being dentists she was not allowed.She eventually got them shrunk when in her fourth year, when she was fifteen*, Draco Malfoy cursed her (although he was aiming for Harry) and made her teeth grow very large. When Madam Pomfrey was shrinking them she let her carry on for a little longer.*Hermione was born on the 19th September 1979 which meant she turned fifteen just after starting her fourth year unlike Harry Potter and Ron Weasley who were still fourteen.