Something you should know about tall women who seem reserved and even distant — they may just be shy or socially awkward, and they may really want to be your friend. I've understood this all my life, of course, but I was well into adulthood when my mother told me she understood it too.
My mother was not the kind of woman who could chat easily with strangers or charm other people's children. She would not have survived as a social worker, therapist, or nurse. If she had belonged to a church that equated righteousness with personally comforting the deranged or the homeless or the dying, she would probably have changed denominations.
I tell you this only to point out that hospitality has many faces.