49 is special because "Memorial services depend on local customs. Usually, there are a number of memorial
services following the death. Most commonly observed are the Buddhist service on
the seventh day after death, shonanoka (初七日), and the 49th day, shijūkunichi (四十
九日). In many traditions, the urn containing the ashes is interred in a ceremony called
nōkotsu (納骨) on the 49th day, and the family stays in mourning until this."
It means her mourning of her love's death is over and she can move forward in joy.
I am not saying that she didn't love the useless men, but that her heart was set on the man she would not ruin and never got to commit to but was committed to