Additional verses from Co'-chruinneachadh dh'Óranan Taoghta, also found in The Harp of Caledonia - A Collection of Popular Gaelic Songs - Clarsach na hAlba no Órana Tagtha Gaidhealach Glasgow: John Cameron, n.d. (1890?) (also found at https://deriv.nls.uk/dcn23/1081/1114/108111143.23.pdf)
These two verses are placed before the verse which begins "Is truagh a rinn do chàirdean," (and by the way, in this case "do chàirdean" is better translated as "your relations", as in kinfolk, rather than "your friends")

MO MHAILI BHEAG ÓG, cont.

'S mise a thug an gaol
Do mo Mhali bhig òig,
Nach dealaich rium san t-saoghal,
Mo nighean bhòideach thu.
Tha d'fhalt air dhreach nan teudan.
Do ghruaidhean mar an caoran;
Do shùilean, flathail, aobhach,
'S do bheul labhaird ciuin. [labhairt]

Shiubhlain leat an saoghal,
Mo Mhali bheag òg
Cho fad a's cùl na greine,
A gheug a's aille gnùis :
Ruithinn agus leumainn,
Mar fiadh air bharr na'n sleibhtean,   [corrected to make sense]
Air ghaol 's gu'm bithinn reidh 's tu,
Mo Mhali bheag og.

my rough translation:

Wasn't it I who loved my little young Molly
Don't part with me in the world
You are my lovely girl
Your hair is like strings [of a harp]
Your cheeks like berries
Your eyes noble and pleasant
And you mouth of quiet speech

I would travel the world with you
my little young Maili
As far as the back of the sun
oh beauty of form and face
I would run and I would leap
Like a deer on the mountains
We would be content in love
My little young Molly