Just had a productive talk with my sister. Here are her points/ideas:

o I am not abandoning my kid, who is nearly adult, by spending time in the States, where
o I work in an office, with people I like, and am not lonely during the day;
o yes, W has won by getting to spend so much time with d16 and getting this apartment in Stockholm, a fun town; life can be that way and this is just my lot.
o so, why not work in the US for two months, out of this memory and pain laden house?
o telling d16 that I am doing so because I am lonely here, but that it doesn't mean I don't love her, and that we can stay in touch by phone or Skype or whatever, and that she will always have my heart
o and that we should book our Japan trip together, before I leave.
o this fixes my loneliness during the day problem very nicely
o I'd tell my MIL that W and I are divorced, and see if she still lets me stay in her house (I could also pay) - MIL and her boyfriend seem to enjoy my company.
o that way W doesn't get to fob off the caretaking of the house onto me: here, dear husband, water, dust, feed the cats, cut the grass, and make sure it stays clean. Bye, I am taking our daughter to live and have a nice time with in Stockholm.

L