I can see both sides on this.
On one hand we tend to idealize the "ideal partner" which - if the objective is to be married - stops us from going for relationships that fall outside of that ideal. I don't mean abusive or dysfunctional relationships, but those with hangups. If time is a factor then waiting could have a big impact on the outcome.
On the other hand, fear can sometimes disguise itself as practicality. "Time running out" and pleasing the family takes over and people end up in marriages out of obligation, rather than love.
I personally don't think that Sensei should go for this simply because her family has helped her in life. As Litreara said, she is opting for something she doesn't want. This opens up the possibility for an unhappy marriage.