Yes, I've found that she did that a lot. Her daughter Lorna was travelling on the same boat. Her surname 'Middlemiss' is the name of Rhoda's previous husband who adopted Lorna. Her name is sometimes given as Ruth Lorna.
To add to the confusion, Rhoda gave her father's name as Harold Jackson on a marriage certificate, when his name was actually Harold Dean.
I've found a little about Rhoda and her marriage to Cyril Edward Middlemiss, thanks to Penny Kendrick who is also researching her. I would still like to know where she ended up, and whether she had any surviving children