Should Choti actually be chote since This is plural?
Nah, adjectives referring to female plural are conjugated the same as for female singular (छोटी, लंबी, मोटी, etc.). The plural is expressed by the हैं as opposed to है.
I was asking the same thing. Thank you for clarifying :-)
It's plural and feminine, and hence it is chhoti.
It marks it wrong if you switch the names...