I feel sorry for L, I have 4 teens and they do so much week in, week out, they are very fortunate not really materialistically, although they do have everything but not because it’s needed to be given to show they’re loved etc it’s because it’s been earned. 4 with very different personalities but we do things to cater them all not just favoured for one of them, it’s a hard one but can be done.
That wee lassie is shoved to the side and you can guarantee that whenever L has an opinion of something she’s told but your being selfish your brother has autism or she’s made to feel bad as it’s not something M would want to do.
I’m pretty sure since you have M strapped to a buggy when it’s convenient for you that you could pop M in his buggy and maybe take L a wee wonder round the shops, there is plenty for girls L age to wander about for I know for a fact as it’s our second home over there Vag, no jealousy here, I’d rather stick blunt needles in my eyes than have ‘your lifestyle’