I really feel for her children. Having one parent with an addiction and another who seems happiest when she’s away from the kids will be so damaging and hard enough without adding the constant house renovations into the mix. The least they could have done is provide their children with a place they can be comfortable in and that isn’t a constant building site and then moving into the next once it’s finished. Doing a house up the way they do isn’t a need, it’s something they like to do. They could have waited until the children were older or they have a more settled relationship with their own issues (I know for mental health that may be never) but at the end of the day you choose to have a family, you cannot do it all and expect the children not to be negatively affected.