The Girl With the Golden Eyes (55-119)

Summary
This is weirdest story I have ever read. Random things happen, some too fast, and some with no explanation. Henri finally gets a date with Paquita (the girl with the golden eyes) after writing a letter to her in which Christianio (Paquita's guard) asked to meet Henri and set up a date. He picks Henri up in a carriage at a certain time and drives him there. During that first date, Henri learns that Paquita's duenna is actually her mother. She speaks only her native tongue, Spanish, so Henri is unable to communicate with her. Since Paquita does not speak French like Henri, they talk English together. Nothing really happens in the first date, only that they share the love they have for each other and kissed goodbye. Earlier in the date however, Paquita cried because she thought Henri was going to kill her...
On the second date, Henri was blindfolded until he reached her home. They were left alone in a soundproof room. During that date, however, I learned of Paquita's bipolarity. She kept crying asking Henri to use her for her love and then kill her. Then the next minute, she is begging him not to because she loves life. He dressed him in a red dress and asks him the weirdest questions.
Third date is where everything went out of control. Paquita talks about how she is like a prisoner, a slave, and wants Henri to take her away to China. She was always kept away from society by her mother and only recently started going out because she told her mother if she couldn't go out and explore men, then she would kill herself. Her mother agreed and that's how she met Henri. Then after they talked of their everlasting love and started getting close, out of nowhere, Paquita cries out "Mariquita" and Henri pushes her away with anger and says "now I know everything I tried not to believe" (Balzac 107). This is where I got confused. Is that the name of another lover?
He stays away from her for another week. Then as he visits her home, he finds her in a pool of blood, and a girl who has a knife in her hand who had previously repeatedly stabbed her to death. The girl talked of love as Paquita was dying. The girl was Marquise de San-Real, Henri's half sister.
Beyond this point, I am completely lost. All I know is that Paquita's mother had a big part to do with her daughter's death (I believe she paid Marquise gold to kill her). Also, I believe there is a connection between "Mariquita" and Marquise. Perhaps Paquita knew that this was going to happen. Perhaps they were in love before... This book is like an incomplete story to me.

Quote
"This person was a mulatto who would surely have inspired Talma to play Othello, had he chanced to meet him. Never did an African face more open express the magnitude of revenge, the swiftness of suspicious, the immediate translation of thought into action, the strength of the Moor and his childish impetuosity" (Balzac 62).

Reaction
This is an allusion to the play Othello. The author is comparing Christinio (Spanish guard of Paquita) to Othello because of his facial expressions. It's interesting because I have already read Othello, so imaging Christinio expression in my head was pretty easy. It made the imagery and the way I view Christinio's character more powerful.