can arms be a straight extension of the shaft?

[RoyHotPower]

Having never swung a club until this summer, my wife is 5 weeks into a 6 week Introductory lesson package. We were at the range yesterday and she was all over the place. The one thing I noticed that was odd is that in her address, she was way back on the ball and her arms appeared as a straight extension to the shaft of her club; probably 30-40 degrees from vertical (not hanging 'relaxed' if she wasn't holding a club).  I asked her about it and she was uncertain if her instructor had told her to do this.  He had told her to make sure at her address that the sole of the club was more or less flat on the ground.

Is there cause for concern?  I'm going through a swing rebuild myself, and I don't really want to say anything to her becuase she left the range discouraged, and I'm not one to give advice in this 'most delicate of situations'.

Previously to yesterday she was striking the ball well, not moving much and getting the clubs (short iron, driver, hybrid) to work the ball as they were intended, which I thought was ideal for a beginner.

I suggested she ask her coach to video her in her final lesson, but she doesn't want to do that.  I'm trying to get her to agree to be videod right afterwards at home going through her address and swing.