Where will Usagi be without the Senshi?

[SailorStar9]

If I remember correctly, in the R Movie it was shown how important Usagi was to the Senshi.

So, comes the question: Where will Usagi be without the girls?

A better question yet: Are the girls as important to Usagi as she is to them?

[moonprince804]

How important the girls are to Usagi, and vice-versa, is evident several times throughout the series, and not just in the R movie.

A couple of examples demonstrating Usagi's dependence on the girls would be when the senshi die in the first/fifth seasons.

One example for how the girls value Usagi is at the end of Sailor Stars when, as the Inner Senshi lie dying, they entrust in the Starlights to protect Usagi in their place.