One of Isabella's younger sisters, Anne Thorpe seems to be the Jan Brady of the Thorpe family. Isabella is clearly the Marcia – her mother introduces the girls by commenting on how Isabella is the prettiest. Anne is also the sister who doesn't go on the excursion to Clifton that Catherine opted out of in order to spend time with Henry and Eleanor. Though Anne insists she didn't want to go, we are never entirely sure if she means that or not. Anne may be the most reasonable of all the Thorpe siblings – she isn't parading around town at any rate.