((60 ft is correct))

From this point forward, Sanjay will either have to continue guiding everyone over the ice by going ahead, or I'll need you each to make a DEX save ((?)) every turn that you move.

 The saber-tooth reaches the ice and snarls at Senine's movement, then continues growling as it begins to stalk the edge staring at the deer, clearly determining risk vs gain.

Sanjay is up!

Sanjay attempts to reach out to the saber-toothed tiger: "We're not here to hurt you. If we leave you alone to hunt that deer, will you let us be on our way without a fight?"

Sanjay roll for Persuasion.

Sanjay Persuasion: 15 

The Saber-tooth seems to agree with Sanjay and only cares about eating the prey before it.  It ignores you all as you pass by, making its way carefully to the deer.

Sanjay continues to guide the rest of the party across thin sheets, but when you're about 20 feet from solid ground you hear the Saber-tooth screech behind you.  Turning, you see that it had nearly made it back to the edge with the deer before breaking through ice itself.  Its scream reverberates in the cold air around you.  A moment later you hear heavy thudding and tree branches snapping close by.  Suddenly, a mighty roar comes from the forest near you as a Yeti pushes through the trees, eyes wild and mouth drooling, hungry.

Keeping the prior initiative; Yeti: 2 

Initiative Order:
Senine - 21
Sanjay - 16
Alminar - 16
Thistle - 14
Salem - 8
Yeti - 3

For sake of combat ((I can't get a good map, sorry))  the yeti is 45 feet from the front of the group.

"If we need to fight, we won't be able to on this ice." Senine says, voice low but urgent, raising her shield. "We need to move to solid ground, now." At that, she carefully moves the twenty feet to solid ground, keeping herself between the rest of the group and the Yeti as best she can.

Senine moves up and with Sanjay close by makes it to solid earth and snow safely, but she is now within 25 ft. of the Yeti.

Sanjay's turn.

"We do have to go, now, just as Senine said! I don't think it's a good idea to fight this yeti if we can avoid it. We're at a distinct disadvantage here." Sanjay will basically use his turn trying to get everyone to move forward and avoid the yeti. He would want to use all of his movement to get continue moving towards safety. He'll otherwise save his action for if the yeti looks to be coming after the group. If it does, he'll cast Entangle on it.

Sanjay moves forward the full 30 ft. while providing guidance to the others who wish to follow him off of the thin ice.  He's just ahead of Senine.

Alminar moves following Sanjay and Senine to get off the ice. He is aware that they should try to get away, but a Yeti is the reason his family is dead. Alminar clutches his longbow tightly, waiting for an excuse to sink an arrow into this horrible beasts eye socket. 

So Alminar also holds his action (except for movement).

It is Thistle's turn!

"Yeah, if we need to fight this thing, I'd rather be on more stable footing," Thistle says in agreement. Thistle will use her full movement (25 ft) to follow Sanjay's steps and use Cunning Action as a bonus action to dash the additional five feet to move up next to Sanjay and Alminar. She will hold her action to attack if it comes after any of them.

Thistle moves quickly but lightly over the ice, making her way to the others and preparing for the possibility of a difficult fight.

Salem, it's your turn!

Salem followed behind Thistle onto the solid ground, "I agree.."

As you all made your way as carefully as possible the last so-many feet to more solid ground, the Yeti had been momentarily distracted looking for the source of the scream.  With your movement however, it sees both a possible opportunity for more food as the saber-tooth is sinking below the ice, and is agitated by your existence.  It focuses its [Tooltip Not Found] on the biggest target it sees - Senine.  Senine, make a Constitution Saving Throw.

 Then moves quickly forward and slashes at those around her - Sanjay and Alminar.

Claw Attack 1: 5 Damage: 4 at Sanjay.

Claw Attack 2: 19 Damage: 7 at Alminar.

The Yeti's first swipe narrowly avoids Sanjay but it's second set of claws finds Alminar's arm, and causes 2 damage and 1 cold damage. 

Con save: 9

((Also, I held my attack for an aggressive action from the yeti, so I should get a strike in before it attacks the others, no?))

((Rolling my held attack on the yeti))

Attack: 11 Damage: 9

Sanjay will also execute his held action, casting entangle on the ground under the yeti. Vines burst up through the ground in a 20' square at his feet and grab for his legs and arms.

The yeti has to make a STR save (DC14) or be restrained. And the ground is considered difficult terrain.

Senine's reaction just misses the yeti ((what did you attack with again?)), and due to its glare is paralyzed for 1 minute ((unless immune to cold damage?)) and takes 2 Damage: 8 of damage.

Sanjay casts entangle; the yeti fights back:  5 

((Senine, just ignore the 8.. don't know why I did that... lol - just 4 damage))