<human>: Can you provide a brief overview of the text?

My mom got pregnant and had a baby with my father when she was 16. This was back in the 60s, she was sent away to a home for unwed mothers then forced to give her baby up for adoption. She and my father ended up marrying a few years later and went on to have 5 more children. 

My mother is a very strong woman that has endured a LOT.  But the one thing she's never been able to get passed is being forced to give up her first baby. 

My siblings and I have all met this older brother, but my mom has not. At one point about 20 years ago he and my parents got in contact and would call/send mail pretty regularly but apparently it got to be too much for my brother to handle so he cut contact. He got in touch with my siblings and I about 10 years ago and we all met up and got together. He made it clear he didn't want to meet my mother so she didn't come. Later she admitted to us that it was one of the hardest nights of her life and she spent several hours crying.

Since then she has said that she regretted that she didn't just show up uninvited. She's also said that if we ever see him again she WILL show up. Now, he's contacted my older sister and told her that he wants us siblings to all get together again.

Now we don't now what to do. I know at least my sister and I won't meet up with him behind our mothers back. But do we tell him what our mom said and risk not seeing him, and not giving her the chance to ever meet him? Or do we agree to meet him, say nothing and let our mom come unannounced? I'd like to ask him if he would be ok with it but I'm afraid he would say no and not only would we not get to see him again but my mom never in her life get the chance to meet him. I have a son myself and I can't even begin to imagine being forced to give him up and never again see him in my life.
<bot>: Mom was forced to give my oldest brother up for adoption. He has said he doesn't want to meet our mother in the past but she's desperate to meet him. Now he wants to meet up with us siblings. Help?