i would always get in Mum's side
My girls always come in on my side. DD1 started going down the bottom of the bed last year if DD2 was already in there & there was no room.
I don't even notice DD2 get in any more. Usually I just wake up & there she is.

If they are sick I will cuddle them, or stroke their hair, or just sit on the floor next to their beds & hold their hands if they need it.
They are always welcome in my bed. DH doesn't like it, but I don't care. If he's away working DS comes straight to bed with me. DD2 is often in there too.