Thanks for the great advice everybody!
.


On Saturday morning I was really worried so I called the vet's office and got the emergency vet in the neighboring county.

She called me back and gave me lots of good advice so they've had only "supervised playtimes" since then. She said that if he tackles her and starts to bite, he needs to be removed immediately and it's ok to yell or scold him so he knows that it's wrong. She's getting scolded if she goes after his tail/food dishes/tummy or tail, too.
.


They're doing much better and they like to play "cat and mouse" a lot.
.
She's the mouse of course.

She goes from one hiding spot to the next and bounces around the house like a monkey. It's just so adorable I can hardly stand it.
.


She isn't doing the sucking anymore so that's a good thing. When she's shut in DS's room, she'll cry to get out, and Rocky will cry too if we let it go on too long.
.


They're slowly but surely becoming good buddies and we're going to try to make sure nobody bullies the other, especially while she's so tiny. When they get older they can fight it out if necessary.