If "she" were a "he" there wouldn't be a problem. Mature ladies sans partners would be queuing at his door, within nano seconds of a guys arrival, eager to run errands or with invites for a good slap up meal. Even couples will invite single men to a party without a thought of providing a female for him to chat to.
However, for ladies without a chaperone life is completely the opposite. Ŵomen in relationships can be openly hostile towards a single lady and watching for those imagined, or proven, " flirty, helpless girl moments " and men just carn't be bothered to go a visiting...unless they have more than friendship in mind.......
Fact of life. However the good news is......
There are multiple activities, all day and everyday in Camposol. All advertised in one of the freebie papers. All your friend has to do is involve herself in, indeed immerse herself ,in as many as she can and hopefully, in time, she will meet with people she can call friends.