I am looking for some unbiased opinions on a situation I have experienced recently with my sister-in-law.
My youngest son has recently turned 18. At the time, he was on holiday with school friends but he had a few cards from friends and family early which he took away to open on the day. He returned for a few hours on the following Saturday, and departed the following day for a second week away with a youth group. It was after his return from his second week away, 13 days after his birthday, that he made phone calls to all grandparents thanking them for their birthday gifts
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My sister-in-law sent a text to my husband two days after this asking my husband to "check/ensure" my son sent a text or made a phone call to his grandmother (her mother) as the grandmother had previously told her she had not heard from my son. I was very upset at what I perceived to be interference and sent her a text saying I didn't think the communication between my son and his grandmother was anything to do with her and asking her to please mind her own business. Thinking that was the end of that I was then surprised and very upset when, later that evening, she and her husband knocked on my door wanting me to apologise! Not wanting an argument I went upstairs as my husband had invited them in. My husband told her he didn't think her text was appropriate, although I would have preferred him not to invite them in and be stronger in our defence.
Am I being unreasonable in thinking that my sister-in-law and her mother should not be discussing my son in the first place? Is it reasonable for my sister-in-law to tell my husband what to tell our son? I feel that the mere fact she sent my husband her text she must have thought there was a chance we would not advise our own son appropriately, which offends me. Am I over-reacting? Should she apologise to me for interfering or do I owe her an apology for anything?