Strength save 21

Mika breaks from of the grapple and slashes at that goblin (yellow). "Get your hands off of me!"

Attack 13 for 6 damage

Myrith again sends an eldritch blast at the hexer, and takes a stab at the orange goblin.

Eldritch blast 18 to hit 4 damage (2+2)

Dagger 12 to hit 3 damage

(Forgot to add for the faerie fire please roll Dex Save DC 13)

Mika dex save 6, she's all lit up...

Dex save 21 

nothing to see here :)

Nice hit from Myrith

Goblin Hexer Concentration Check DC 10

The Goblin Hexer grunts in pain but they hold onto the Faerie Fire.

Vonnet

Scimitar - Red Goblin

14 - miss

Dilly

Hand Crossbow - Red Goblin

12 - miss

Goblin Hexer looks to Mika

In a raspy tone "Please stop attacking my friends as you are my friend, right? They are only defending themselves" 

Persuasion with Advantage

18

Red Goblin 

Scimitar - Red Goblin

4 - miss

Yellow Goblin

Ready action in case Mika attacks again

Scimitar - Mika

18 - hit 4 slashing damage

Orange Goblin

Scimitar - Myrith

6 to hit  - miss

Myrith Please roll Dex Save DC 13 or fall prone due to Grease

Round 8

The party is up. Post when able. 

{What roll is needed to resist being persuaded?}

Myrith feels her feet lose their grip on the floor and ends up prone. She lets loose an eldritch blast at the hexer again and takes a poke at the orange goblin's ankles with her dagger. Needless to say, she misses with both.

Question for DM. I'm assuming I can't move/stand until the next round. Is that correct?

Mika can roll Insight with disadvantage as you are charmed though you would have the meet or beat 18

Myrith can spend half their movement to stand. 

Mika Insight 21, rolled in game log.

So now what?

Please roll with disadvantage due to being charmed 

Second roll 6 (nat 1).

"They're attacking my friends! Who are only defending themselves!"

But since the Yellow goblin didn't attack this turn, Mika doesn't have a problem with not attacking either.

In that case Myrith will stand up and launch her attacks

Eldritch blast against hexer - 19 to hit 1 damage

Dagger against orange goblin - 15 to hit 3 damage

She will then step 5' out of the grease patch and onto one of the goblin bedrolls, but not far enough to give an attack of opportunity.

Orange Goblin - Dead

Vonnet

Scimitar - Red Goblin

19 to hit 3 damage

Dilly

Hand Crossbow - Red Goblin

19 to hit 2 damage 

Red Goblin Dead

Goblin Hexer

Moves to Vonnet

Hex Stick

Attack: 18 Damage: 14

Yellow Goblin

Ready Action advantage - If Mika attacks

 22 to hit 5 damage

Dilly

Dex Save Dc 13 

She fell then stood up.

Goblin Hexer Concentration Check DC 10

11 - Faerie Fire still in effect

Round 9

The party is up. Post when able.

Seeing the others surrounding the hexer, Myrith decides to take on the yellow goblin. She moves within melee range and casts Toll the dead and follows up with a dagger strike, but takes damage in return.

Toll the dead  - Wis save DC 13 - 3 damage or 5 if already wounded

Dagger - to hit 16 damage 3

 Myrith on 1 Hp