Calookan is funny with addresses, it's long and divided to a lot of areas and that you have to include every names of areas, barranggays, zone etc. Two of my aunties live there and them two have different types of addresses as one of them live in the upper side of Calookan city and the other in a crowded and a bit disorganised area.

I am not familiar to the place you mentioned but to help ease your mind up, I think Maligaya is a barranggay in Novaliches or what they call area or a zone. Novaliches is a city within Calookan city, it's a main city or central of Calookan, there is a big market place which they call "Bayan" in Novaliches, it link to a lot of places and areas around calookan city, it is the main place to get transportation to get around calookan city.

Dont be confused, I am sure your girlfriend will not be mistaken with her own address especially if she live there all her life.

Below is an example of addresses for you to compare and to give you an idea on how funny calookan with addresses, it's an address of my two relatives there, hope it help you a little bit.

(name of person)
xxxxx St, Block xxx Lot xx
Camarin II Area D Baranggay xxx
Zone xxx Calookan City


Another example;

(name of person)
Lot xxx Block xx
xxxx St
Rainbow Village
Phase I
Novaliches Calookan city