Thank you. I would say not all churches insist a potential gay parishioner attend conversion camps.
If she will you might ask your daughter to watch these videos.
This is newer than the one of 6 years ago. It's a riot, IMO.
They're excellent IMO. And they refute the idea that Christianity is a reworking of Egyptian religious practices. Especially since the ancient Egyptians were polytheists. Unlike Christianity. Though there are those, and I've met and spoken with them, that believe Christianity is a polytheistic faith due to the Trinity or Triune, doctrine.
You might tell your daughter that while it is deplorable any Christian would be condescending and outright rude to gays, the fact is being gay is not a sin in our faith.
Acting on that sexually immoral behavior is sin.
Also, there are Christian denominations now that have decreed they accept Homosexuals into their church.
https://en.wikipedia.org/wiki/List_of_Christian_denominational_positions_on_homosexuality
They even permit them to hold offices and perform gay marriage ceremonies. One can presume these are sexually active gays. This in our faith is termed, Apostasy.
All sexually immoral acts are sin. This pertains to anyone, not just gays.
Lastly, you might gently inform your daughter that her opinion of churches due to their ascribing to Christian Biblical values, is no less intolerance and discriminatory as to that she dislikes as pertains to what she believes are those Christians showing intolerance for gays. You might also wish to look it up for her consideration in the reading of that reporting that shows many in the LGBTQ community are wholly intolerant of Christians.
It is inconsistent to be upset to the point of abandoning one's faith due to Christian values against sexually immoral sins, and in the coarse of that intolerance, be one who is intolerant of Christianity and Christians that ascribe to the Bible's position on sexual immorality.
As a Christian she should remember that there are a great many things that are considered sins. The unrepentant sinner is doomed to Hell. What value is it in a friendship to let ones gay friends perish in their own sins because those friends don't wish to be called a sinner who sins.
I hope you reach your daughter.