Just wondering if this is start of dementia for MIL. The memory lapses could be explained by alcohol dependency - drinks excessively every day, hides alcohol and rarely is compis mentis.
However she took it to a new level this week. Her DGS was receiving an award at school, invited her (and FIL- but he does actually have korsakoffs) and she took ticket and enthused how she wouldn't miss it.
Guess what they didn't turn up. No word until today and she phones DH to apologise, no explanation just defence. DS did say she seemed a bit too enthusiastic at the time. However I think she actually didn't take in the conversation as she was too drunk which is obviously worrying. She must have then found the ticket and thought oh !
Do we let it go or intervene? The confabulation is her making up things that didn't happen - mostly to do with the DGC- and maybe she wishes they had happened. Also rewriting history to suit. MIL has always been indifferent to DH but he thought she might make an effort for her only DGC - his DC. Also she offers money on a pay per view basis and that is probably only reason why boys still go to see her.
DH is past caring but I can only see situation getting worse as FIL is also alcohol dependent but supposedly had been rehabilitated (DH took him to GP) but MIL buys him alcohol or they go out for liquid lunches.