I just think it's important to know you can go, and feeling too much family pressure shows selfishness rather than love for the individual. I'm glad you said 'or shouldn't be' to the shunning. I can't imagine shunning family members over that.
But this is fairly typical of those testimonies I've read. Certainly not just some whim, or because they're unhealthy. It's a serious well thought out decision, based on experiences. One can only feel for them. I wish her Mom could read it, anonymously. But there is also this ... doesn't happen to me' denial syndrome for a lot of us.
Reading the post I have a sense that her mother will be OK about it and in all likelihood already senses that her daughter is having issues with her faith.
I think its all part of a process of secularisation that is more pronounced in the West and increasingly dominant in the East too, where people are questioning the values and beliefs they have grown up with and exploring new ideologies. The general trend in the West is a move away from religion into not having any belief. Baha'u'llah predicted this when He talked about the vitality of men's belief in God is dying out in every land.
Are you suggesting that Hindu parents never apply pressure to their children to live in accordance with their cherished beliefs and values? Hindus of course have the same types of problems as other faith adherents. I think its just harder for some parents to let go, yet still love.