That is the key, To let them find out them selves but with me it took fifteen years to relaise the lies. I am not sure we can generalise. Some marrages need to be left alone and sometimes mother (or father) is right.
Who can say, but if you have god in your heart, you will get through it. At least I prey I will, but this is not about me, what I am saying is parents need to judge whe to step in and when not to but also how to go about it. Not sure any onf us have the answers here.