The child not being able to cope without the mother for a few hours sounds like it must be unusual.
Eh? It’s not exactly unusual for a two year old to wake up in the middle of the night and want a parent. And even less so at 7am.
If the OP had known from the start that this was an all-nighter then it would be a different situation. But instead he’s faced with an upset child at 3am and no good answer to the “Where’s mummy?” question.
And worse, if the OP answered something suitably soothing “Don’t worry. She’s nearly home. Go back to sleep and she’ll be here in the morning.” then she would have made a liar of him twice, further upsetting the kid and eroding the trust he has for his grandpa.
Not cool.
Wonder how many posters have expereince bringing a child up alone that age.
Plenty of poster have stated that bringing up a kid at that age must be very difficult and requires a lot of maturity.
All the more reason that she needs careful guidance and support from more mature adults that want the best for her and her kid.