As long as she's eating and drinking normally, using the litterbox normally and not showing any signs of pain, then I'm sure she's fine

She's probably stressed out because you have company. My RB Mopsie hated visitors, instead of sleeping in her usual spots she would hide behind the couch the whole time until they were gone.

Give her alone time if she wants it, but if she comes to you for attention, make a big fuss of her, so she doesn't feel left out. Hopefully she'll be fine once your guests have left - maybe next time you should ask her permission before having anyone over