Really Prerna means so much to Prem?? I can see she does mean a lot to him coz she is his Mother. But I think Prem still needs to prove himself that he is trustworthy.
Prerna loves Prem a lot. She almost put her entire family in trouble because of him. Prem has just begun to love Prerna. Yes Prerna does make hasty decisions, this is her flaw!!
Old Prem was her first child. No matter what happens she will always miss him and cry for him.