I am new to Rootschat so please excuse any wrongdoings until I learn how to do things properly

I am looking to find what happened to a woman born Hilda Emily Harris
in the 1920's in Wickford, Essex to Stanley and Emma Harris who married
in the 1920's in Billericay Register Office. I understand from some nephews and nieces that she used to socialize with American and Canadian soldiers after at the end of the war and as there are no marriage or death records in the UK I am thinking she may have emigrated with one of them to the U.S./Canada. I have no experience in US/Canadian genealogy - any ideas where I could start? Thank you.
Post edited as likely living Person