not really... John Dashwood is male and in any case his father is dead when he goes against his promise to help the girls. but girls were much more under their parents care. Teh Bertrams disobey their father but only when he's out of the way and Lady B is too lazy to keep a better eye on them...When he comes back they fall inot line...

If Freind's father was not well off enough to provide suitable care for his daughter and his daughter's guest, then he should not have allowed his daughter to invite Eliza..I assume that if he's well off enough to go to Bath for his health and his daguther knows Eliza socialy then they are gentlefolk of problaby the same sort of means as Col B has...

Just as IMO Mrs Forster should not have invited Lydia to stay iwht her. I dont say that constant chaperonage was necessary at all times - but a certain amount was, especialy if the girls were young and silly.

Yes Eliza is tormented by self reporach when her romance has goen wrong, but clearly she was stubborn in pursuring it, and in continuing to look for Willoughby after his desertion. IIRC it wasn't till her friend (after a logn time) told Brandon what had been going on, and until she was close to the end of her pregnancy, that B was able to find her. So clearly IMO both girls were foolish to a degree, the friend in covering up for Eliza and E in preferring to stay on her own, in difficult circumstnaces, rather than go home to Brandon whom she must have known would help her....
I can't see how anyone could defend hte friend keeping Eliza's secret when she had disappeared... since had Brandon found her sooner Eliza would at least have been spared a long period of distress....