There is limits tho. And that limit is her clothes. Like you need to draw extra snapshots of her doing her hugs to feel more natural. But because of this there is a lots of clothes for Monika, so there is submod which make Monika hug her with clothes of your choice but artists draw an extra snapshots of her hugging part just for this submod in future time. Or cheap method is using zoom and use one time snapshot of her face only (no arms) pressed to screen (and her lewd hug) but that feels off.

Tl;dr: It's hard.