Yes. In some cases, family sponsorship is one part of a larger decision involving settlement, children, timing, and long-term planning.
Yes. Even where the relationship is genuine and straightforward, the process still depends on proper documentation, timing, and careful preparation.
No. Different family relationships may be relevant depending on the circumstances. The correct route depends on the actual legal and factual situation.
If you have the right relationship and the right circumstances, it may be. Family sponsorship depends on both the relationship itself and the legal framework that applies to it.