To be fair, Morriva does have the distinct advantage of having been (literally) made that way. She was originally a very expensive pleasure slave commissioned for someone who had some very specific tastes. A quick glance at her should probably be enough to tell you all you need to know. Big and extremely curvy. However, through a mixture of circumstances, she wound up alone.
Not quite prepared for life on her own in the real world, adjusting was very rough. But, she is naturally friendly and predisposed to be helpful and make others happy, so it wasn't hard for her to find work as a waitress.
Though she seems perfect for that job, her figure also causes some issues. Other than attracting a lot of attention, it's also really easy to bump into things unintentionally, or lose her balance. So, she's kind of bounced around a lot as far as jobs go, until a sweet and shy guy named Terry came across her. He had an instant crush on her, but was too shy to do anything about it. Luckily his sister picked up on the 'subtle' hints and helped force the two to finally talk and get to know each other.
Eventually the two formed a relationship, which was really great for Morriva because now she not only has a boyfriend, but she also gets to work at the inn their family runs. She's still kind of clumsy and attracts a lot of attention with her notably unique figure, but, this time she's also surrounded by a group of people who are happy to help look after and look out for her. Discounting the occasional prank or joke, of course.
Some useful things to know about Morriva, she has a hyper sensitive sense of touch due to being created as a pleasure slave. This is so that even at large sizes, she can still feel and enjoy the sensations of her partner. For convenience, her size can be controlled via a remote that is genetically keyed to her. So, don't confuse it with the TV remote or the results might surprise you.
Due to her upbringing in preparation of being a pleasure slave Morriva will always try to make sure those around her are happy, even at her own expense, which often leads to embarrassing situations for her. That is, until she became surrounded by people who want to genuinely support her. Since becoming involved with the Elcome's she still tends to put others first, but she's learning to put more focus on her own happiness as well, becoming her own confidant woman with the help and encouragement of a supportive environment.