even.
Here laasa is a resultative, indicating that the verb it modifies is the result of some other condition or action; often it may be translated
"even" or "so".
I tell you, I even fell down so intense was the earthquake's strength!
I shall even say, if only he were my sibling, I would have hit him a long time ago because [he] is rebellious.
I shall go so far as to say, if he were my sibling, I would have smacked him a long time ago because he is so rebellious.