Hindi. Gender matters...

1. yah ladkaa meraa chotaa bhaaii hai -> This boy is my little brother
2. yah ladkii merii chotii bahin hai -> This girl is my little sister
3. meraa betaa thiik hai lekin merii betii biimaar hai - My son is well but my daighter is sick

ATTN: The speaker of the three sentences above could be either male or female: THE GENDER of MERAA/MERII DEPENDS ON THE THING OR PERSON POSSESSED, NOT THE POSSESSOR.

aapkAA betAA kaafi lambAA hai
aapkII betII bahut sundar hai

Invariable adjectives:

zindaa - alive
shadii-shudaa - married
khalii - vacant, epmty, free