P.M.
I can't guess from your post whether you've been in Africa 2+ weeks, or six. It takes a *minimum* of two weeks, often more, to adjust to an almost complete reversal of day/night. Plus babies and toddlers are often cycling through dramatic natural stages of their own. Add to this the major changes in your household situation, and you've got plenty of good reasons for her to have apparent sleep difficulties.
A lot of people attribute the quick changes little ones go through to ideas like "discipline" or "spoiling," but having watched lots of family patterns over my 60-something years, young children shuffle their patterns according to their own internal changes, like growth or learning spurts, that disrupt sleep for awhile. Or adapting to new circumstances.
To associate these changes with "spoiling" a child is usually a mistake. Children thrive on affection, holding, and attention, as long as these focus on the natural needs of the child, and are not used to compensate for the parents' own psychological needs.
Wearing your little girl as you work through the day might be really helpful. She may nap better, which could have the effect of quieting her nervous system and helping her sleep better at night, too.
Also, take care of yourself, and let go of as much anxiety about this as you are able. If your voice or body language is tense or impatient when you're trying to help her relax, she will probably sense that. It sure doesn't help a baby sleep. If you can look at your "extra" time with her in the evenings as joyful, and probably temporary, you'll all have an easier time now, and happier memories to look back on.