Re: Twin sister for Lorien?
The same as in English. Just say 'lorry' (rhymes exactly with 'sorry'), then stick 'en' on the end.
The 'o' in Lorien is the 'o' as in 'lot', rather than 'ah' as in 'car' or 'aw' as in 'law', which are the sounds that the US accent would put in there.