In all fairness to the “shvigger”, the trip to Israel was not mentioned at any time until after several dates and only then she questioned whether it was right to keep the girl in limbo while he is away. she should have asked, is it ok to go with someone else while he is away, for after all, just like she has no “claims” on someone who dated her daughter several times, he has no “rights” to this girl either. Unfortunately, she didn’t ask that, instead she came across as a whiny interfering shvigger.
I didn’t read the article in question, however, Oomis said that she wanted to know if they should be concerned about him. I think it’s a valid question.
For some people three to five dates can mean both parties are really serious. For some people even after twenty dates, it doesn’t mean they are really serious.
For you, it would be normal for her to wonder if she can see someone else in the interim. For others, such a question would not seem normal, and would make them keep far away from a person who asks such a question.
And it’s not a question of anyone having the right to control another persons behavior. But rather to evaluate if the person is acting in a decent manner, which is something very vital when looking for a marriage partner.