I really believe the visa issue is at the heart of this move, with the financial troubles, homesickness, education for the kids, no friends/life/success in Montecito contributing factors but not the deciding one.
Having navigated the US visa system, along with many friends who have done the same, (all with shit hot lawyers who work for big multinationals) it really isn’t easy, and something like drug use can and will get you denied or deported. Put Trump into the mix and it’s a recipe for disaster.
I think they have been forced into this move with Harry having to get out of the country ASAP. Neither wants to split (yet) so they all move back here, but know that this will never work for Meghan so have already got the wheels in motion for her to spend time in other places.
Yes - she has made being a mother a huge part of her identity, but I don’t believe for a second she would ever want to be a single mother, at least not with an ex who can’t set foot in the country she and the DC live in. She is far too self-centred, and while being a parent requires huge sacrifice and selflessness, being a genuinely solo parent requires much more and I just don’t think she’s capable of that.
Conversely, I actually think Harry could throw himself into solo parenting so even if she was at their “international bases”, he could and would step up to do what his DC needed. He would, of course, always have the financial security of his family to be able to do that, whereas Meghan wouldn’t.