I've got all your emails and links thank you, but I suggest keeping all our comments and post on here for other members to see rather than going to emails.
From Original documents
Thinks I've noticed a few things already from page 50 onward to page 62 and beyond
Janet Brown was travelling cabin class (first Class) (indirectly would support business woman theory) and she a had 2 baggage's with her.
If you go to page 64 - children are recorded at all ages, also on some pages just gives the child age in months out of 12 (written like a fraction in maths ) like 9/12 = example 9th month of the 12 month or 1 year
Also on other pages post 50 onwards, the children are listed in family order with the fathers full name (with surname) the rest other family are first names of the wife & children with ditto for their surname under father surname. Or Mother surname if the father is not traveling with his family.
I noticed Janet occupation was single woman but 2 passengers below was Rachel Hamm a Milliner
(I wonder if they were traveling together

)
So I'll look for any Ivy's aged 2 or 3 tomorrow but not that hopeful as I think Janet Brown was travelling alone.