Dear DGF's parents:
Hate to say it, but you have to grow up.
Your oldest daughter is almost 30 and still terrified of the thought that you might find out she has a gf. Is this your fault or hers? No real matter, but I admire how stringently your adhere to your religious and moral objections to others' rights and freedoms. Still, God so help me, when I feel ready and able to have a child of my own; if my dear little girl (or boy) decides to be (whatever their orientation might be) then I'll be happy for them as long as they're happy. I hope I never live to make my kids afraid to tell me important things about themselves and their lives. If I think I'm responsible and adult enough to foster another blossoming life, then I better d*mn well be responsible and adult enough to accept their lives as being their own, and their happiness as important to them first, regardless of whether or not it 'pleases' me, as long as they're not hurting themselves or someone else.

Parents like you prove the wisdom my mom passed on one night: "Everyone tries to do better by their kids than was done by them... I try, but I hope you take all your observations, wait til you're 30 so you know where you are, and then do the better by your kids- then send them home so I can spoil them."

DGF will be a brilliant mom...
but her kids will never have to be afraid of what they can or can't tell their mom.
-Best regards,
Someone who loves your little girl