Context: My mum had another heart attack on Saturday afternoon . We thought that she would be out by today , that they were only keeping her in overnight for observation . My sister picked me up from a station and we went from there to her and mum 's house , where we watched an increasingly distressing girly movie after she changed out of the half dress that she was wearing from the night before . While there , I managed to pick up all but the last of the stuff that I still had in the garage there from the old house . Amongst it , I found a mini treasure trove of Moana keepsakes , much of which I do n't even remember being given .

Question: What may have been the hospital 's reason for keeping your mum overnight ?
Options:
0. I asked them to keep her in overnight .
1. They wanted to verify her condition .
2. None of the above choices .
3. She had another heart attack while she was there .
Answer: 1