Though rather than panic or run in any other direction like most ponies would, Pen’s maternal instincts kicked in when she saw the utter despair and terror in the sirens wide eyes. Whatever had the pup out on her own was not something she wanted to find out nor did she wish anything upon the merpony she suspected it was. Using careful movements and a soft soothing voice, Shell managed to close distance with the pup and eventually embrace the youngling who surprisingly took to her harmless gesture with gusto. With the fear dispelled and the warning alarms still hounding loudly, Pen threw the pup onto her back and took her home where though she tried to find her mother there was no success in the attempts from notices to active searches where she stumbled upon the little filly.
Since then the pup had taken to her naturally and became an adoptive daughter of the sorts loving any and all interaction with her new surrogate mother. In a ways the pup even increased the mares profits by being able to swim out to sand bars for more prized specimens which shone beautifully in Celestia’s great sun. After a few years the two were soon of the same height, but to Shell the hatchling was much her own as if she carried and birthed her herself. Every morning walk to the beach had become less of a part of her way of living to blissful heaven and joyful talk with the young siren.