I have two DD’s and the thought of them growing up and not wanting to spend time with me is upsetting
Are you for real?
You are already one of those mothers, and I'd put money on your DDs posting a similar thread about you when they are adults.
Get a grip, please. I have an adult DD already, and guess what, sometimes she would rather spend time with her friends/boyfriend/boyfriend's family than with me and that is absolutely fine. Furthermore, it's healthy, and I would never make her feel guilty about that, or insist that I tag along.
Sometimes she spends time with her siblings without me - equally fine and healthy.
My mum on the other had is the pity-partying type, guilt trips me and make me feels bad for not spending enough time with her. If she was less needy and negative, and eased up on the guilt trips maybe I would choose to do that.
And by the way, assuming that both sisters and their DHs work, their time off work is precious and should be spent however they choose, nobody should infringe on that time.