When i'm away from my wife?

by Landz
(dubai, uae)

i am away from my wife and my daughter co'z i am working from other country. before, my wife always contact me by phone,sms
and email and chatting also. but after one year, my wife is not doing these things anymore. sometimes when i send her sms,emails, and messages from facebook shes not replying. and when we are using video chatting, when i ask her wher she go what she doing, she gets angry. she dont want me to ask question of her wherabouts. i don't understand why she's getting like these. is these a sign that she's hiding something or she's cheating me? thank you.