RE-birth,life,born,incarnate, even transmigration. It's the 2nd life of host. My transmigrated/rebirthed MC will be the independent woman/man with free spirit, & tough attitude to live her/his 'new life' better than the previous one. Slow romance.  Almost all will have a more/less 100-200 chapters, no more than 300. For simple story like this, short ones is sufficient. 

1. MC already marries to ML&already gives birth to a child(s) that she neglects. The marriage is usually a 'plastic' one, with the ML only cares for the child & let MC alone.  The child will be a cute one, smart and very very 'involve' with the story. The 'new' MC/host will take the challenge of repairing the broken relationship with the husband & the child, but the romance is slow (I prefer that). 

2. Most of the novel MC is already married,has child(ren), but I might put few with the same theme but without child, so for the one without child(ren) the struggle & the main theme will resolve on MC and ML only. Sometimes, ML isnt the husband.

In all novels, MC will deal with the family/friends/ex-lovers that take advantage of MC(ML) money.  It is as per usual, the face slapping is there but not prominent. It's more interesting than the romance. I like to read abt wolf in sheep skin getting skinned alive and grilled XD