Mine is adjustable, my rig is a 2002 so probably a 2005 stove. If you don't have the manual, it will be available on line. Read the manual and see what it says.
If there isn't any adjustment for the flame, NO, there isn't any other way of getting what you want, if the manual says it is adjustable, you need to use the stove and see if it adjusts according to the manual. If you can't adjust it, buy her a new stove.
Where is Doug when we need him or Chris. They are pros and know what way is up.