Late assessment - ADIR without an informant who knew me as a child

Hi,  I've got my assessment through right to choose this week, aged 56.  It's going to be ADOS then ADIR but the only person around who knew me as a kid is my Mum who is nearly 80 and highly unreliable.  I'm taking my husband - but wondered if anyone has had a similar experience of ADIR and know how that's likely to work and whether there's any extra prep I should be doing?  (I've not really seen any discussion of ADIR, let alone for an late assessment like this)

I guess I'm just fretting a bit. The agency is fine with me bringing my husband who I've known for 18 years.  Thing is, we didn't meet until I was 37 and  he's not seen what I'm like without him - and with him I'm happier and less bothered with my social ineptitude than I was (he himself is ASD) - so I'm a wee bit worried that it will give a misleading view of how life, as a whole, has been for me.