Oh okay..., you can think of it as more food. It might very well end up being that way.
But I'm hearing the vine snapping under our combined weight. At the very least, having more people join the grapple should make the vine/people combo too heavy to lift off the ground.
Too bad DnD doesn't really have a mechanic for what happens when you try to carry too much.
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For anyone thinking of jumping onto this grapple (it's 5' off the ground now), you should know that it is possible to Take 10 on jumps. However, with your 'vertical reach', you should be able to grab on easily.
For those thinking of shooting the vine, you might want to aim at where the vine comes from, instead of the part wrapped around Shimala. If you don't you have a good chance of hitting someone in the 'mob of grappling PCs other frozen red meat (1000 gp)', which would be sad. Otherwise, it might be better to switch to a melee weapon.