Agree, don't show him the thread. This isn't the time for that because you've already spoken to him about his behaviour and it's made no difference to him.
I think him seeing this will be turned into you lying about him, telling everyone his business, making him look bad.
Seriously, get yourself some help, try to see if you can get some councelling for yourself, tell him you are trying to get help for DD if needs be, then once you feel confident in yourself again get a SHL (Shit Hot Lawyer) and get serious advice about your rights and his behaviour. Both you and DD deserve much, much better than this and it's up to you to get it for both because he won't and she can't. But don't give him information to beat you down with.
Concentrate on you and DD.
Many lawyers now give 30 mins advice free of charge. Take his holiday as an opportunity to write out a list of questions and get a few 30 mins with solicitors to find out the basics of your's and DD's rights.
Have you spoken at all to your GP about the stress of dealing, alone, with DD's problems, why your husband fucks off 3 times a year for holiday?