Custom Wine Glasses

Customs in Thailand is this?
My wife husbands Thai brothers came to stay with us as she and her mother had a fight. Doing strange things I called my son and told him fat ate too often, etc. (by the way my son is not fat, but Thailand is not that strong child Russian Australia) He also made comments about how people eat and what we do, that opened my bank account and moved my email (only her and my husband at home and told me that he was not ?)… when her husband came to fetch commented on my two glasses of wine I drank at dinner. In the morning came to my room to wake me to leave early. Is it normal behavior of Thailand or she is just rude? I am offended by this behavior should be. My husband said he does not trust her .. I do not know? I talked to my mother, who said he also opened his mail … hmmm I just read that Thailand is the custom of having more money is head of the family … it should have opened my mail does not my husband that maybe she would pull their heads in.
Her husband is probably right. Although it is customary Thai let him know that she is not in Thailand. She get it together or get out!
Personalized Stemless Wine Glasses