The first True Dragon

This is a female rimuru of story where rimuru was born as a true dragon. She is the oldest and strongest of the true dragons and the big sister of Veldenava.

One day she had to leave her brother and sister to go into hibernation but accidentally slept for a bit too long. When she wakes up, she finds that her brother had died and that her sister Velzard had to take the burden of raising the other two by herself.

What will she do now that she is back ?

Female rimuru OC