HedgeHog I just want to scoop you up in a massive unmumsnetty hug, that is a lot to deal with, too much for one person to deal with. All the posters quizzing her about why she chose to have more children knowing there were genetic disorders - you should be fucking ashamed of yourselves. Diabetes, HMS, EDS, regularly genetically tested for during pregnancy? Course not. Is it a given that if one child has EDS all the rest will? Nope. I have a parent with EDS. I have hypermobility syndrome, my other siblings don't. How could the op predict all of this?
As for "all kids wake up in the night" (numpty, possibly?) Yep, being sleep deprived for the first few months with a new baby - normal. Years and years of not just night wakings but waking up with dislocations ffs, needing injections, being too in pain to sleep.. not really the same is it?
Numpty I get that you may be trying to give the op tough love to spur her to sort things out, but doing it with no understanding of what you're criticising her about is counter-productive to say the least. I think we've all established that this "jealousy" over the stag do isn't even on the radar here, time to let that go.
Oh and LePolarBear Go on then, what do you suggest? Try dealing with sleepless nights, exhausting days, long-term ill children then come up with a solution. Easy, isn't it? 